BD Merit - Freelancing, BCS, Bank, Primary, Admission, NTRCA

1 . x2-x-6=0

A. 2,3
B. 2,-3
C. -2,3
D. -2,-3

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Answer: Option C

Explanation:

x^{2} - x - 6 = 0 \Rightarrow x^{2} - 3 x + 2 x - 6 = 0 \Rightarrow x (x - 3) + 2 (x - 3) = 0 \Rightarrow (x + 2) (x - 3) = 0 S o, x = 3 o r, x = - 2

2 . x2-x-6=0

A. 3,2
B. 3,-2
C. -3,2
D. -3,-2

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Answer: Option B

Explanation:

x^{2} - x - 6 = 0 \Rightarrow x^{2} - 3 x + 2 x - 6 = 0 \Rightarrow x (x - 3) + 2 (x - 3) = 0 \Rightarrow (x - 3) (x + 2) = 0 x - 3 = 0 ∴ x = 3 x + 2 = 0 ∴ x = - 2 ∴ x = 3, - 2