zapissz w postaci sumy algebraicznej:
(x - 2y)do kwadratu - (x+1)do kwadratu
3(x - 5)do kwadratu - (2x-1)do kwadratu
(x - 3)do kwadratu - 2(x - 1) do kwadratu
(x + pierwiastek 2) do kwadratu +2(x - pierwiastek 2) do kwadratu
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(x-2y)² - (x+1)²=x²-4xy+4y² -(x²+2x+1)=x²-4xy+4y²-x²-2x-1=
3(x-5)²-(2x-1)²=3(x²-10x+25)-(4x²-4x+1)=3x²-30x+75-4x²+4x-1
(x-3)²-2(x-1)²=x²-6x+9-2(x²-2x+1)=x²-6x+9-2x²+4x-2
(x+√2)²+2(x-√2)²=x²+2x+2+2(x²-2x+2)=x²+2x+2+2x²-4x+4
=x^-4xy+4y^-x^-2x-1=-4xy+4y^-2x-1 ^ kwadrat
=3x^-30x+75-4x^+4x-1=-x^-26x+74
=x^-6x+9-2x^+4x-2=-x^-2x+7
=x^+2 pierwiastki z 2+2x^-4 pierwiastki z 2+4=3x^-2 pierwiastki z2-6