Ehangu
1-n^{2}+2mn-m^{2}
Enrhifo
-\left(m-n\right)^{2}+1
Rhannu
Copïo i clipfwrdd
-\left(m^{2}-2mn+n^{2}\right)+1
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(m-n\right)^{2}.
-m^{2}+2mn-n^{2}+1
I ddod o hyd i wrthwyneb m^{2}-2mn+n^{2}, dewch o hyd i wrthwyneb pob term.
-\left(m^{2}-2mn+n^{2}\right)+1
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(m-n\right)^{2}.
-m^{2}+2mn-n^{2}+1
I ddod o hyd i wrthwyneb m^{2}-2mn+n^{2}, dewch o hyd i wrthwyneb pob term.
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