Question

Explain how to subtract the polynomial (The first attachment) from (The second attachment)

Answer 1

$(5x^3-3x-6)-(4x^3+7x+1)\\\\=5x^3-3x-6-4x^3-7x-1\\\\=(5x^3-4x^3)+(-3x-7x)+(-6-1)\\\\=x^3+(-10x)+(-7)\\\\=\boxed{x^3-10x-7}$