Enrhifo
25y^{2}
Ehangu
25y^{2}
Rhannu
Copïo i clipfwrdd
16x^{2}-40xy+25y^{2}-8x\left(2x-5y\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(4x-5y\right)^{2}.
16x^{2}-40xy+25y^{2}-16x^{2}+40xy
Defnyddio’r briodwedd ddosbarthu i luosi -8x â 2x-5y.
-40xy+25y^{2}+40xy
Cyfuno 16x^{2} a -16x^{2} i gael 0.
25y^{2}
Cyfuno -40xy a 40xy i gael 0.
16x^{2}-40xy+25y^{2}-8x\left(2x-5y\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(4x-5y\right)^{2}.
16x^{2}-40xy+25y^{2}-16x^{2}+40xy
Defnyddio’r briodwedd ddosbarthu i luosi -8x â 2x-5y.
-40xy+25y^{2}+40xy
Cyfuno 16x^{2} a -16x^{2} i gael 0.
25y^{2}
Cyfuno -40xy a 40xy i gael 0.
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