Question

(2x-1)(x+5) + (2x-1) la puterea 2 - 2x la puterea 2 +x=?

Answer 1

dezvoltand⇒2x^2+10x-x-5+4x^2-8x+1-4x^2+x=2x^2-2x-4=2x^2-2x-2-2=2(x^2-1)-2(x+1)=2(x+1))(x-12(x+1)=(x+1)(2x-4)

Answer 2

= (2x-1)(x+5) + (2x-1)² - x(2x-1) 
=(2x-1)(x+5 + 2x -1-x)
= (2x-1)(2x+4)
= (2x-1)*2(x+2)= 2(2x-1)(x+2)