Question

Find the roots of quadratic equation X square+6x+5 is equal to 0

Answer 1

p(x) = x²+6x+5 = 0

⇒x²+5x+x+5 = 0

or x(x+5)+1(x+5) = 0

or (x+1)(x+5) = 0

∴ x = –1, –5 which are the roots of p(x).