Solve for y
y=-\frac{x^{2}}{3}
Solve for x (complex solution)
x=-i\sqrt{3y}
x=i\sqrt{3y}
Solve for x
x=\sqrt{-3y}
x=-\sqrt{-3y}\text{, }y\leq 0
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y-4y=x^{2}
Subtract 4y from both sides.
-3y=x^{2}
Combine y and -4y to get -3y.
\frac{-3y}{-3}=\frac{x^{2}}{-3}
Divide both sides by -3.
y=\frac{x^{2}}{-3}
Dividing by -3 undoes the multiplication by -3.
y=-\frac{x^{2}}{3}
Divide x^{2} by -3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}