Question

решите уравнение  (2x+5)^2 =4x^2+10x+5 

Answer 1

(2x+5)^2=4x^2+10x+5

4x+25=26x+5

4x-26x=-25+5

-22x=-20

x=20/22

Answer 2

4x^2+20x+25-4x^2-10x-5=0
10x+20=0
x=-2