A= ( x - 2 ) + 2 (x - 2 ) (2x + 2 ) + 4 (x + 1 )

Question

cattien · Answer

Đáp án: A= (x-2)+2(x-2)(2x+2)+4(x+1)  A=x-2+2(2x^2+2x-4x-4)+4x+4  A=x-2+4x^2-4x-8+4x+4  A=4x^2+x-6

A= ( x – 2 ) + 2 (x – 2 ) (2x + 2 ) + 4 (x + 1 )