Question

12(X2+7x)2-8(X2+7x)(2x-1)-15(2x-1)2​

Answer 1

Step-by-step explanation:

24( x2+7x)-8(x2+7x)(2x-1)-30(2x-1) =0

Now we take common

8(x2+7x){3-(2x-1)} - 30(2x-1)=0

8(x2+7x)(4-2x) - 30(2x-1) =0

(8x2+56x)(4-2x) - 60x+30 =0

32x^2 - 16x^3 +224x - 112x^2 - 60x +30 =0

-16x^3 - 80x^2 +164x+ 30 =0