Solve for y
y=\left(x-2\right)\left(x+4\right)
Solve for x (complex solution)
x=-\left(\sqrt{y+9}+1\right)
x=\sqrt{y+9}-1
Solve for x
x=-\left(\sqrt{y+9}+1\right)
x=\sqrt{y+9}-1\text{, }y\geq -9
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x^{2}+2x+1-9=y
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+1\right)^{2}.
x^{2}+2x-8=y
Subtract 9 from 1 to get -8.
y=x^{2}+2x-8
Swap sides so that all variable terms are on the left hand side.
Examples
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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
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