(3x+2)^2=(3x-1)(2+3x)
wynik ma wynosic : x = - 2/3
(3x+2)²=(3x-1)(2+3x)
9x²+12x+4=6x+9x²-2-3x
9x²+12x-6x-9x²+3x=-2-4
9x=-6 /:9
x=-6/9= -2/3
(3x+2)^2 = (3x-1)(2+3x)
wzór skróconego mnożenia = (a+b)^2 = a^2 + 2ab + b^2
9x^2 + 12x + 4 = 6x + 9x^2 - 2 - 3x
9x = - 6
x = - 6/9
x = - 2/3
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(3x+2)²=(3x-1)(2+3x)
9x²+12x+4=6x+9x²-2-3x
9x²+12x-6x-9x²+3x=-2-4
9x=-6 /:9
x=-6/9= -2/3
(3x+2)^2 = (3x-1)(2+3x)
wzór skróconego mnożenia = (a+b)^2 = a^2 + 2ab + b^2
9x^2 + 12x + 4 = 6x + 9x^2 - 2 - 3x
9x = - 6
x = - 6/9
x = - 2/3