Enrhifo
\left(x+1\right)\left(3x+4\right)
Ehangu
3x^{2}+7x+4
Graff
Rhannu
Copïo i clipfwrdd
9x^{2}+12x+4-\left(6x^{2}+5x\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(3x+2\right)^{2}.
9x^{2}+12x+4-6x^{2}-5x
I ddod o hyd i wrthwyneb 6x^{2}+5x, dewch o hyd i wrthwyneb pob term.
3x^{2}+12x+4-5x
Cyfuno 9x^{2} a -6x^{2} i gael 3x^{2}.
3x^{2}+7x+4
Cyfuno 12x a -5x i gael 7x.
9x^{2}+12x+4-\left(6x^{2}+5x\right)
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(3x+2\right)^{2}.
9x^{2}+12x+4-6x^{2}-5x
I ddod o hyd i wrthwyneb 6x^{2}+5x, dewch o hyd i wrthwyneb pob term.
3x^{2}+12x+4-5x
Cyfuno 9x^{2} a -6x^{2} i gael 3x^{2}.
3x^{2}+7x+4
Cyfuno 12x a -5x i gael 7x.
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