Question

I tried to solve but I am not getting it would be grateful if anyone helped me​

Answer 1

Answer:

12(x²+7)² - 8(x²+7)(2x-1)-15(2x-1)²

Taking (x²+7) = a and (2x-1) = b

⇒ 12a² - 8ab -15b²

Now splitting the middle term:

12a² - 18ab + 10ab - 15b²

6a(2a-3b) + 5b(2a-3b)

(2a-3b)(6a+5b)

Subsituting values of a and b:

[2(x²+7) -3(2x-1)][6(x²+7) +5(2x-1)]

(2x² + 14 - 6x + 3)(6x² + 42 + 10x - 5)

(2x²- 6x + 17)(6x²+ 10x+ 37)

Here is your answer buddy...

Step-by-step explanation:

Hope it helps you :)