Enrhifo
-\left(x-2\right)^{2}+8
Ehangu
4+4x-x^{2}
Graff
Rhannu
Copïo i clipfwrdd
4-\left(x^{2}-4x+4\right)+4
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-2\right)^{2}.
4-x^{2}+4x-4+4
I ddod o hyd i wrthwyneb x^{2}-4x+4, dewch o hyd i wrthwyneb pob term.
-x^{2}+4x+4
Tynnu 4 o 4 i gael 0.
4-\left(x^{2}-4x+4\right)+4
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-2\right)^{2}.
4-x^{2}+4x-4+4
I ddod o hyd i wrthwyneb x^{2}-4x+4, dewch o hyd i wrthwyneb pob term.
-x^{2}+4x+4
Tynnu 4 o 4 i gael 0.
Enghreifftiau
Hafaliad cwadratig
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y = 3x + 4
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699 * 533
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