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Problemi Simili mit-Tiftix tal-Web

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x^{2}-2xy-\left(x+y\right)^{2}
Uża l-propjetà distributtiva biex timmultiplika x b'x-2y.
x^{2}-2xy-\left(x^{2}+2xy+y^{2}\right)
Uża teorema binomjali \left(a+b\right)^{2}=a^{2}+2ab+b^{2} biex tespandi \left(x+y\right)^{2}.
x^{2}-2xy-x^{2}-2xy-y^{2}
Biex issib l-oppost ta' x^{2}+2xy+y^{2}, sib l-oppost ta' kull terminu.
-2xy-2xy-y^{2}
Ikkombina x^{2} u -x^{2} biex tikseb 0.
-4xy-y^{2}
Ikkombina -2xy u -2xy biex tikseb -4xy.
x^{2}-2xy-\left(x+y\right)^{2}
Uża l-propjetà distributtiva biex timmultiplika x b'x-2y.
x^{2}-2xy-\left(x^{2}+2xy+y^{2}\right)
Uża teorema binomjali \left(a+b\right)^{2}=a^{2}+2ab+b^{2} biex tespandi \left(x+y\right)^{2}.
x^{2}-2xy-x^{2}-2xy-y^{2}
Biex issib l-oppost ta' x^{2}+2xy+y^{2}, sib l-oppost ta' kull terminu.
-2xy-2xy-y^{2}
Ikkombina x^{2} u -x^{2} biex tikseb 0.
-4xy-y^{2}
Ikkombina -2xy u -2xy biex tikseb -4xy.