решите уравнение (2x+5)^2 =4x^2+10x+5
(2x+5)^2=4x^2+10x+5
4x+25=26x+5
4x-26x=-25+5
-22x=-20
x=20/22
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(2x+5)^2=4x^2+10x+5
4x+25=26x+5
4x-26x=-25+5
-22x=-20
x=20/22
10x+20=0
x=-2