Question

The two roots of a quadratic equation are 2 and -1 . The quadratic equation is

a) x2 + 2x – 2 = 0 b) x2 + x +2 = 0 c) x2 – 2x +2 = 0 d) x2 – x – 2 = 0​

Answer 1

the quadratic equation whose roots are 2 nd -1 is

x² - x - 2

hope it's helpful......

Answer 2

Step-by-step explanation:

sum of roots = 2+(-1) = 1

product of roots =2 (-1) = -2

so , the required quadratic equation is

x2- (sum of zeros ) x + product of zeros

x2-1x-2

therefore the answer is. x2-x-2