Enrhifo
18n^{2}+8
Ehangu
18n^{2}+8
Rhannu
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9n^{2}-12n+4+\left(3n+2\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(3n-2\right)^{2}.
9n^{2}-12n+4+9n^{2}+12n+4
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(3n+2\right)^{2}.
18n^{2}-12n+4+12n+4
Cyfuno 9n^{2} a 9n^{2} i gael 18n^{2}.
18n^{2}+4+4
Cyfuno -12n a 12n i gael 0.
18n^{2}+8
Adio 4 a 4 i gael 8.
9n^{2}-12n+4+\left(3n+2\right)^{2}
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(3n-2\right)^{2}.
9n^{2}-12n+4+9n^{2}+12n+4
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(3n+2\right)^{2}.
18n^{2}-12n+4+12n+4
Cyfuno 9n^{2} a 9n^{2} i gael 18n^{2}.
18n^{2}+4+4
Cyfuno -12n a 12n i gael 0.
18n^{2}+8
Adio 4 a 4 i gael 8.
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