Wzory skróconego mnożenia :
a)(a+b)do potęgo 2 - (a-b) do potegi 2
h) -8x-(3x+2)(3x-2)-6(x+1/6)+(3x+1) do potęgi 2
i) -2x(x-3y)+(y-3x)do potęgi 2 +(y-3x)(y+3x)
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a)a^2+2ab+b^2-a^2+2ab-b^2=4ab
h) -8x-(3x+2)(3x-2)-6(x+1/6)+(3x+1)^2=-8x-9x^2-4-6x+1+9x^2+6x+1=-2x-2
i)-2x(x-3y)+(y-3x)^2+(y-3x)(y+3x)=-2x^2+6xy+y^2-6xy+9x^2+ Y^2-9x^2=-2x^2+2y2