Enrhifo
y^{2}
Ehangu
y^{2}
Rhannu
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x^{2}-2x\left(x+y\right)+x^{2}+2xy+y^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+y\right)^{2}.
x^{2}-2x^{2}-2xy+x^{2}+2xy+y^{2}
Defnyddio’r briodwedd ddosbarthu i luosi -2x â x+y.
-x^{2}-2xy+x^{2}+2xy+y^{2}
Cyfuno x^{2} a -2x^{2} i gael -x^{2}.
-2xy+2xy+y^{2}
Cyfuno -x^{2} a x^{2} i gael 0.
y^{2}
Cyfuno -2xy a 2xy i gael 0.
x^{2}-2x\left(x+y\right)+x^{2}+2xy+y^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+y\right)^{2}.
x^{2}-2x^{2}-2xy+x^{2}+2xy+y^{2}
Defnyddio’r briodwedd ddosbarthu i luosi -2x â x+y.
-x^{2}-2xy+x^{2}+2xy+y^{2}
Cyfuno x^{2} a -2x^{2} i gael -x^{2}.
-2xy+2xy+y^{2}
Cyfuno -x^{2} a x^{2} i gael 0.
y^{2}
Cyfuno -2xy a 2xy i gael 0.
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