2(x+5)²=???????????

Question

2(x+5)²=???????????

Answer 1

2(х^2+10х+25)=0
2х^2+20х+50=0
2х^2+20х=-50
2х^2=-2,5
х^2=-1,25

Answer 2

2*(x^2 +2*5*x+5^2) =2*(x^2+10x+25)=2x^2+20x+50