subject-primary-assistant-teacher-math?page=464-BD-Merit-Freelancing,-BCS,-Bank,-Primary,-Admission,-NTRCA

6946 . If $x^{2} - 4 x + 3 e q u a l s 0, t h e n w h a t i s t h e v a l u e o f {(x - 2)}^{2}$

A. 3
B. 2
C. 1

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Answer: Option C

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6947 . If $x^{2} - 4 x + 3 = 0,$ then wat is the value of) ${x - 2)}^{2} ?$

A. -1
C. 1
D. 3

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Answer: Option C

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সাধারণ বীমা কর্পোরেশন || জুনিয়র অফিসার (12-07-2019)

6948 . If $x^{2} + 4 x + 3$ is odd, then which oine of the following could be the value of x ?

A. 9
B. 11
C. 12
D. 16

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Answer: Option D

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সিকিউরিটি প্রিন্টিং কর্পোরেশন বাংলাদেশ | সহকারী ব্যবস্থাপক- 26-11-2021 || 2021

6949 . If $x^{2} + 4 x + 3$ is odd, then which one of the following could be the value of x?

A. 9
B. 11
C. 12
D. 16

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Answer: Option D

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6950 . If $x^{2} + 4 x + 13 = 1 + x^{2}$ then find out the value of $x^{2}$

A. 9
C. 4
D. 7

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Answer: Option A

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6951 . If $x^{2} + \frac{1}{x^{2}} = 8$ and $x y = 7$ ,find the value of ${(x + y)}^{2}$

A. $14$
B. $16$
C. $22$
D. $24$

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Answer: Option C

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সমাজসেবা অধিদপ্তর নিয়োগ পরীক্ষা-২০১৮ | ফিল্ড সুপারভাইজার | ১৪.০৯.২০১৮

A. x - z
B. zx - 1
C. x - 1
D. (x - 1)/z

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Answer: Option A

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গ্যাস ট্রান্সমিশন কোম্পানি লিমিটেড | সহকারী ব্যবস্থাপক | ২০.০৪.২০১৮

6953 . If x/y =1/3, then value of $(x^{2} + y^{2}) / (x^{2} - y^{2})$ is-

A. -10/9
B. 5/4
C. -5/4
D. -5/3

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Answer: Option C

Explanation:

\frac{x}{y} = \frac{1}{3} \frac{x^{2}}{y^{2}} = \frac{1}{9} \frac{x^{2} + y^{2}}{x^{2} - y^{2}} = \frac{1 + 9}{1 - 9} = \frac{10}{- 8} = - \frac{5}{4}

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6954 . If x = 63% of y, then $y^{2}$ is approximately what percent of $x^{2}$

A. 125%
B. 200%
C. 250%
D. 350%

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Answer: Option C

Explanation:

প্রশ্নে বলা হচ্ছে, x = 63 % o f y হ ল ে y^{2}, x^{2} এ র কত শতাংশ হবে ? দেয়া আছে, x = 63 % o f y \Rightarrow x = \frac{63 y}{100} \Rightarrow 100 x = 63 y \Rightarrow \frac{y}{x} = \frac{100}{36} \Rightarrow {(\frac{y}{x})}^{2} = {(\frac{100}{63})}^{2} = (\frac{10000}{3969} \times 100) % = 251.95 % ∴ \frac{y^{2}}{x^{2}} = 250 % (প্রায়)

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বাংলাদেশ টেলিযোগাযোগ নিয়ন্ত্রণ কমিশন || সহকারী পরিচালক (19-02-2021) || 2021

A. 2 - x
B. x/2
C. 2/x
D. (2 - x)(2 + x)

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Answer: Option A

Explanation:

এখানে বলা হয়েছে x = 10 হলে অপশন গুলার মধ্যে কোনটায় সর্বনিম্ন মান হবে...

এখন, x এর মান আমরা সবগুলায় বসায়ে দেখি,

1. 2 - x = 2 - 10 = - 8

2. x/2 = 10/2 = 5

3.2/x = 2/10 = 0.2

4. (2 - x) (2 - x) = (2 - 10)(2 - 10) = ( - 8) ( - 8) = 64

এখানে সর্বনিম্ন মান হচ্ছে (2 - x) এটাই সঠিক উত্তর

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6956 . If x = 1, then $- (x^{4} + x^{3} + x^{2} + x) =$

A. -10
B. -4
D. 4

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Answer: Option B

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6957 . If $|x - 1| = 2 x,$ what is the value of x?

A. $- 1$
B. $\frac{1}{3}$
C. $\frac{4}{3}$
D. $2$

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Answer: Option B

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বাংলাদেশ সেতু কর্তৃপক্ষ (সহকারী সাব-ইঞ্জিনিয়ার) 18-12-2020

6958 . If x +y = 1/a and x-y =a then the value of $x^{2} - y^{2}$ is:

A. 4
C. 1
D. $a^{2}$

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Answer: Option C

Explanation:

দেওয়া আছে, x + y = \frac{1}{a} এবং x-y=a {এখন, x}^{2} {-y}^{2} = (x + y) (x - y) = \frac{1}{a} ×a=1

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6959 . If x + y = 3 and x = $\frac{2}{y}$ What is the value of $x^{3} + y^{3}$ ?

A. 19
B. 18
C. 27
D. 9

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Answer: Option D

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বাংলাদেশ রপ্তানি প্রক্রিয়াকরণ কর্তৃপক্ষ (সহকারী ম্যানেজার) 02-04-2021 || 2021

A. 7
B. 25
C. 65
D. 91

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Answer: Option D

Explanation:

x + y = 7

x2 + y2 = 25

(x + y)2 - 2xy = 25

7x2 - 2xy = 25

2xy = 24

xy = 12

x3 + y3 = ( x + y)3 - 3xy ( x + y)

= 73 - 3×12×7

= 343 - 252

= 91

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BCSIC নিয়োগ পরীক্ষা - ২০১৮ পদ: এক্সটেনশন অফিসার তারিখ: ০৯-১১-২০১৮

6952 . If x/z is 1 more than y/z, then y =?

6955 . If x = 10, which of the following has the minimum value?/x = 10 হলে নিচের কোনটির মান সর্বনিম্ন?

6960 . if x+y=7 and x^2+y^2 =25 then which of the following equals the value of x^3+y^3 ?

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