Enrhifo
\left(x-40\right)\left(x-10\right)^{2}
Ehangu
x^{3}-60x^{2}+900x-4000
Graff
Rhannu
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x\left(900-60x+x^{2}\right)-4000
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(30-x\right)^{2}.
900x-60x^{2}+x^{3}-4000
Defnyddio’r briodwedd ddosbarthu i luosi x â 900-60x+x^{2}.
x\left(900-60x+x^{2}\right)-4000
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(30-x\right)^{2}.
900x-60x^{2}+x^{3}-4000
Defnyddio’r briodwedd ddosbarthu i luosi x â 900-60x+x^{2}.
Enghreifftiau
Hafaliad cwadratig
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