Question

bai 1 tinh 

a (x-2)(x^2+2x+4)-x(x^2-1)

b (x+1)(x-3)-(x+4)(x-4) lam nhanh giup em nha cam on

Answer 1

a) \(=x^3-8-x^3+x=x-8\)

b) \(=x^2+x-3x-3-x^2+16=13-2x\)