3. Which of the following eq has 2 as a root?
(A) x²-4x+5=0
(B. x^2+ 3x - 12=0
(C) 2x ² -7+6
(b) 3 x ²-6 x-2 =0
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5
Answer:
=> (2)² + 3×2 -12 = -2 , 2 is not a root as 2 doesn't satisfy the equation. => 2(2)² - 7×2 +6 = 0 , 2 is a root as 2 satisfies the equation
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hii Riya d have a nice day
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