Question

Q4. Quadratic polynomial
having zeroes 1 and - 2 is
*​

Answer 1

x 2+x-2

If x=1 and x=−2 are zeros f the quadratic equation, then (x−1) and (x+2) are factors so their product will give us the equation.

Therefore

(x−1)(x+2)=x

2

+2x−x−2

=x

2

+x−2