Question

12(x²+7)² - 8(x²+7)(2x-1) - 15(2x-1)²

Answer 1

Answer:

12x4-16x³+116x²+517

Step-by-step explanation:

12(x²+7)² - 8(x²+7)(2x-1) - 15(2x-1)²

12(x4+2(x²)(7)+(7)²) - 8(x²(2x-1)+7(2x-1)) - 15(4x²-2(2x)(1)+(1)²)

12(x4+14x²+49) - 8(2x³-x²+14x-7) - 15(4x²-4x+1)

12x4+168x²+588 - 16x³+8x²-112+56 - 60x²+60x-15

12x4-16x³+168x²+8x²-60x²+588-112+56-15

12x4-16x³+116x²+517

hope it will helps you friend