Ehangu
81x^{18}-18x^{9}+1
Enrhifo
\left(1-9x^{9}\right)^{2}
Graff
Rhannu
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1-18x^{9}+81\left(x^{9}\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(1-9x^{9}\right)^{2}.
1-18x^{9}+81x^{18}
I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 9 a 2 i gael 18.
1-18x^{9}+81\left(x^{9}\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(1-9x^{9}\right)^{2}.
1-18x^{9}+81x^{18}
I godi pŵer rhif i bŵer arall, lluoswch yr esbonyddion. Lluoswch 9 a 2 i gael 18.
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