Enrhifo
-\left(x+4\right)^{2}+7
Ehangu
-x^{2}-8x-9
Graff
Rhannu
Copïo i clipfwrdd
-\left(x^{2}+8x+16\right)+7
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+4\right)^{2}.
-x^{2}-8x-16+7
I ddod o hyd i wrthwyneb x^{2}+8x+16, dewch o hyd i wrthwyneb pob term.
-x^{2}-8x-9
Adio -16 a 7 i gael -9.
-\left(x^{2}+8x+16\right)+7
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(x+4\right)^{2}.
-x^{2}-8x-16+7
I ddod o hyd i wrthwyneb x^{2}+8x+16, dewch o hyd i wrthwyneb pob term.
-x^{2}-8x-9
Adio -16 a 7 i gael -9.
Enghreifftiau
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