What is the factorization of 2x2−7x−15?
(x-3) (2x-5)
(x-5) (2x+3)
(x+3) (2x-5)
(x+5) (2x-3)
Find two numbers such that their product is -30 and sum is -7.
P(x) = 2x2−7x−15
= 2x2−10x+3x−15
= 2x(x-5) + 3(x-5)
= (x-5) (2x+3)
Factorise 2x2+11x+15
The factors of the polynomial 4x 2+ 12x + 9 are
Find the roots of the equation 2x2−7x−39=0 by the method of factorization.