Datrys ar gyfer y
y=-\left(2x+1\right)^{2}+7
Datrys ar gyfer x (complex solution)
x=\frac{-\sqrt{7-y}-1}{2}
x=\frac{\sqrt{7-y}-1}{2}
Datrys ar gyfer x
x=\frac{-\sqrt{7-y}-1}{2}
x=\frac{\sqrt{7-y}-1}{2}\text{, }y\leq 7
Graff
Rhannu
Copïo i clipfwrdd
y=-\left(4x^{2}+4x+1\right)+7
Defnyddio'r theorem binomaidd \left(a+b\right)^{2}=a^{2}+2ab+b^{2} i ehangu'r \left(2x+1\right)^{2}.
y=-4x^{2}-4x-1+7
I ddod o hyd i wrthwyneb 4x^{2}+4x+1, dewch o hyd i wrthwyneb pob term.
y=-4x^{2}-4x+6
Adio -1 a 7 i gael 6.
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