Enrhifo
10x+5
Ehangu
10x+5
Graff
Rhannu
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x^{2}+6x+9-\left(x-2\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+3\right)^{2}.
x^{2}+6x+9-\left(x^{2}-4x+4\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-2\right)^{2}.
x^{2}+6x+9-x^{2}+4x-4
I ddod o hyd i wrthwyneb x^{2}-4x+4, dewch o hyd i wrthwyneb pob term.
6x+9+4x-4
Cyfuno x^{2} a -x^{2} i gael 0.
10x+9-4
Cyfuno 6x a 4x i gael 10x.
10x+5
Tynnu 4 o 9 i gael 5.
x^{2}+6x+9-\left(x-2\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+3\right)^{2}.
x^{2}+6x+9-\left(x^{2}-4x+4\right)
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-2\right)^{2}.
x^{2}+6x+9-x^{2}+4x-4
I ddod o hyd i wrthwyneb x^{2}-4x+4, dewch o hyd i wrthwyneb pob term.
6x+9+4x-4
Cyfuno x^{2} a -x^{2} i gael 0.
10x+9-4
Cyfuno 6x a 4x i gael 10x.
10x+5
Tynnu 4 o 9 i gael 5.
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\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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