(3x+2)^2=x(-2+9x)
Z góry dziękuje ;**
9x^2 + 12x + 4 = -2x + 9x^2
12x + 4 = -2x
12x + 2x = -4
14x = -4
x = -4 : 14
x = -4/14
x = -2/7
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(3x+2)^2=x(-2+9x)
9x^2 + 12x + 4 = -2x + 9x^2
12x + 4 = -2x
12x + 2x = -4
14x = -4
x = -4 : 14
x = -4/14
x = -2/7