Ehangu
-x^{2}-8x-33
Enrhifo
-\left(x+4\right)^{2}-17
Graff
Rhannu
Copïo i clipfwrdd
-\left(x^{2}+8x+16\right)-17
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-16-17
I ddod o hyd i wrthwyneb x^{2}+8x+16, dewch o hyd i wrthwyneb pob term.
-x^{2}-8x-33
Tynnu 17 o -16 i gael -33.
-\left(x^{2}+8x+16\right)-17
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-16-17
I ddod o hyd i wrthwyneb x^{2}+8x+16, dewch o hyd i wrthwyneb pob term.
-x^{2}-8x-33
Tynnu 17 o -16 i gael -33.
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