Enrhifo
8x+1
Ehangu
8x+1
Graff
Rhannu
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16x^{2}+8x+1-\left(4x\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(4x+1\right)^{2}.
16x^{2}+8x+1-4^{2}x^{2}
Ehangu \left(4x\right)^{2}.
16x^{2}+8x+1-16x^{2}
Cyfrifo 4 i bŵer 2 a chael 16.
8x+1
Cyfuno 16x^{2} a -16x^{2} i gael 0.
16x^{2}+8x+1-\left(4x\right)^{2}
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(4x+1\right)^{2}.
16x^{2}+8x+1-4^{2}x^{2}
Ehangu \left(4x\right)^{2}.
16x^{2}+8x+1-16x^{2}
Cyfrifo 4 i bŵer 2 a chael 16.
8x+1
Cyfuno 16x^{2} a -16x^{2} i gael 0.
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