( 2x - 1 )^2 ( x+5 ) = ( 4x + 5 ) ( x + 1 )^2
( 4х^2 - 4x + 1) ( x + 5 ) = ( 4x + 5 ) ( x^2 + 2x + 1 )
4x^3 + 20x^2 - 4x^2 - 20x + x + 5 = 4x^3 + 8x^2 + 4x + 5x^2 + 10x + 5
4x^3 + 20x^2 - 4x^2 - 20x + x + 5 - 4x^3 - 8x^2 - 4x - 5x^2 - 10x - 5 = 0
Разные знаки, вычеркиваем
20x^2 - 4x^2 - 20x + x - 8x^2 - 4x - 5x^2 - 10x = 0
Складываем
3х^2 - 20x + x - 4x - 10x = 0
Складываем
3х^2 - 33х = 0
3х ( х - 11 ) = 0
1) 3х = 0 ; х = 0
2) х - 11 = 0 ; х = 11