Enrhifo
8-8x
Ehangu
8-8x
Graff
Rhannu
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x^{2}-6x+9-\left(x+1\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-3\right)^{2}.
x^{2}-6x+9-\left(x^{2}+2x+1\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+1\right)^{2}.
x^{2}-6x+9-x^{2}-2x-1
I ddod o hyd i wrthwyneb x^{2}+2x+1, dewch o hyd i wrthwyneb pob term.
-6x+9-2x-1
Cyfuno x^{2} a -x^{2} i gael 0.
-8x+9-1
Cyfuno -6x a -2x i gael -8x.
-8x+8
Tynnu 1 o 9 i gael 8.
x^{2}-6x+9-\left(x+1\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-3\right)^{2}.
x^{2}-6x+9-\left(x^{2}+2x+1\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+1\right)^{2}.
x^{2}-6x+9-x^{2}-2x-1
I ddod o hyd i wrthwyneb x^{2}+2x+1, dewch o hyd i wrthwyneb pob term.
-6x+9-2x-1
Cyfuno x^{2} a -x^{2} i gael 0.
-8x+9-1
Cyfuno -6x a -2x i gael -8x.
-8x+8
Tynnu 1 o 9 i gael 8.
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