решите уравнение плиз x(x+2)-3=4(x+1)-1. Created by 110401. algebra-ru

решите уравнение плиз x(x+2)-3=4(x+1)-1...

Ляно4ка X(x+2)-3=4(x+1)-1
x²+2x-3=4x+4-1
x²+2x-4x=3+4-1
x²-2x=6
что-то дальше немного не пойму.

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karamelizabel X(x+2)-3 = 4 (x+1)-1
x^2+ 2x - 3 = 4x + 4 - 1
x^2 + 2x - 4x = 3 + 4 -1
x^2 - 2x = 6
x^2 - 2x - 6 = 0
x1+x2 = 2
x1 * X2 = -6
X1 = -3
X2 = 2
не помню, вроди так

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