Datrys ar gyfer y
y=-4x^{2}+8x-8
Datrys ar gyfer x (complex solution)
x=-\frac{\sqrt{-y-4}}{2}+1
x=\frac{\sqrt{-y-4}}{2}+1
Datrys ar gyfer x
x=-\frac{\sqrt{-y-4}}{2}+1
x=\frac{\sqrt{-y-4}}{2}+1\text{, }y\leq -4
Graff
Rhannu
Copïo i clipfwrdd
y=-4\left(x^{2}-2x+1\right)-4
Defnyddio'r theorem binomaidd \left(a-b\right)^{2}=a^{2}-2ab+b^{2} i ehangu'r \left(x-1\right)^{2}.
y=-4x^{2}+8x-4-4
Defnyddio’r briodwedd ddosbarthu i luosi -4 â x^{2}-2x+1.
y=-4x^{2}+8x-8
Tynnu 4 o -4 i gael -8.
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