The two roots of a quadratic equation are 2 and – 1. The equation is
The two roots of a quadratic equation are 2 and – 1. The equation is
A) x2 + x + 2 = 0
B) x2 – 2x + 2 = 0
C) x2 + 2x – 2 = 0
D) x2 – x – 2 = 0
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Correct option is (D) x2 – x – 2 = 0
Given that two roots of the quadratic equation are 2 and -1.
\(\therefore\) Required quadratic equation is
(x - 2) (x+1) = 0
\(\Rightarrow x^2-2x+x-2=0\)
\(\Rightarrow x^2-x-2=0\)
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