Ehangu
4x^{2}+8xy+9y^{2}
Enrhifo
\left(2x+3y\right)^{2}-4xy
Rhannu
Copïo i clipfwrdd
4x^{2}+12xy+9y^{2}-4xy
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(2x+3y\right)^{2}.
4x^{2}+8xy+9y^{2}
Cyfuno 12xy a -4xy i gael 8xy.
4x^{2}+12xy+9y^{2}-4xy
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(2x+3y\right)^{2}.
4x^{2}+8xy+9y^{2}
Cyfuno 12xy a -4xy i gael 8xy.
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