Enrhifo
x\left(60-x\right)
Ehangu
60x-x^{2}
Graff
Rhannu
Copïo i clipfwrdd
900-\left(x^{2}-60x+900\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-30\right)^{2}.
900-x^{2}+60x-900
I ddod o hyd i wrthwyneb x^{2}-60x+900, dewch o hyd i wrthwyneb pob term.
-x^{2}+60x
Tynnu 900 o 900 i gael 0.
900-\left(x^{2}-60x+900\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-30\right)^{2}.
900-x^{2}+60x-900
I ddod o hyd i wrthwyneb x^{2}-60x+900, dewch o hyd i wrthwyneb pob term.
-x^{2}+60x
Tynnu 900 o 900 i gael 0.
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