Question

quadratic expressions 4x2+16x​

Answer 1

Answer:

x=4

Step-by-step explanation:

factorize ax2+bx+c, one should split middle term in two parts, so that their product is ac and sum is b.

Hence in 4x2−16x+15, while the product should be 4×15=60, sum should be −16. It is apparent that these are −6 and −10.

Hence 4x2−16x+15

= 4x2−10x−6x+15

= 2x(2x−5)−3(2x−5)

= (2x−3)(2x−5)