Question

Find the zeroes of the quadratic polynomial f(x) = x2 - 3x – 28 and verify the relationship between the zeroes and the co-efficient of the polynomial.

Answer 1

Step-by-step explanation:

x2−3x−28=0x2−7x+4x−28

=0x(x−7)+4(x−7)=0(x+4)(x−7)=0

∴x=−4,7sumofroots

=−4+7=3productofroots=−4×7=−28