Question

Factories, splitting the middle term: 4x²- 4x-15​

Answer 1

Answer:

4x^2 - 4x - 15

= 4x^2 - 10x + 6x - 15

2x (2x-5) +3 (2x-5)

(2x-5) (2x+3)

Step-by-step explanation:

I hope you got it...

Answer 2

Answer:

Given :-

➪ 4x² - 4x - 15

Solution :-

➪ 4x² - 4x - 15 = 0

➭ 4x² - (10 - 6)x - 15 = 0

➭ 4x² - 10x + 6x - 15 = 0

➭ 2x(2x - 5) + 3(2x - 5) = 0

➭ (2x - 5) (2x + 3) = 0

➭ (2x - 5) = 0

➭ 2x - 5 = 0

➭ 2x = 5

➭ x = 5/2

Either,

➭ (2x + 3) = 0

➭ 2x + 3 = 0

➭ 2x = - 3

➭ x = - 3/2

∴ The value of x is 5/2, - 3/2