Datrys ar gyfer y
y=\left(7x-8\right)^{3}
Datrys ar gyfer x
x=\frac{\sqrt[3]{y}+8}{7}
Graff
Rhannu
Copïo i clipfwrdd
y=343x^{3}-1176x^{2}+1344x-512
Defnyddio'r theorem binomaidd \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} i ehangu'r \left(7x-8\right)^{3}.
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