Enrhifo
-\left(x-y\right)^{2}+4
Ehangu
4-y^{2}+2xy-x^{2}
Rhannu
Copïo i clipfwrdd
4-\left(x^{2}-2xy+y^{2}\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-y\right)^{2}.
4-x^{2}+2xy-y^{2}
I ddod o hyd i wrthwyneb x^{2}-2xy+y^{2}, dewch o hyd i wrthwyneb pob term.
4-\left(x^{2}-2xy+y^{2}\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-y\right)^{2}.
4-x^{2}+2xy-y^{2}
I ddod o hyd i wrthwyneb x^{2}-2xy+y^{2}, dewch o hyd i wrthwyneb pob term.
Enghreifftiau
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Terfynau
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