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1 . x2-4x+3=0

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Answer: Option C

Explanation:

দেওয়া আছে, x^{2} - 4 x + 3 = 0 x^{2} - 3 x - x + 3 = 0 x (x - 3) - 1 (x - 3) = 0 (x - 3) (x - 1) = 0 অতএব, x - 3 = 0 x = 3 এবং x - 1 = 0 x = 1 এখন x = 3 হলে {(x - 2)}^{2} = {(3 - 2)}^{2} = 1^{2} = 1 আবার x = 1 হলে {(x - 2)}^{2} = {(1 - 2)}^{2} = - 1^{2} = 1

2 . x2-4x+3 equals 0,then what is the value of x-22

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Answer: Option C

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3 . x2-3x,x2-9

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Answer: Option C

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a² - 3a = a ( a - 3) a² - 9 = a² - 3² = (a+3) (a-3) a² - 4a + 3 = a² - 3a - a + 3 = a (a-3) - 1 (a-3) = (a-3) (a-1) নির্ণেয় গ.সা.গু = (a-3)

4 . x2-4x+3

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Answer: Option B

Explanation:

x^{2} - 4 x + 3 = x^{2} - 3 x - x + 3 = x (x - 3) - 1 (x - 3) = (x - 1) (x - 3)

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