Solve for a (complex solution)
\left\{\begin{matrix}\\a=2\text{, }&\text{unconditionally}\\a\in \mathrm{C}\text{, }&x=0\end{matrix}\right.
Solve for x (complex solution)
\left\{\begin{matrix}\\x=0\text{, }&\text{unconditionally}\\x\in \mathrm{C}\text{, }&a=2\end{matrix}\right.
Solve for a
\left\{\begin{matrix}\\a=2\text{, }&\text{unconditionally}\\a\in \mathrm{R}\text{, }&x=0\end{matrix}\right.
Solve for x
\left\{\begin{matrix}\\x=0\text{, }&\text{unconditionally}\\x\in \mathrm{R}\text{, }&a=2\end{matrix}\right.
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ax^{2}-2x^{2}=0
Use the distributive property to multiply a-2 by x^{2}.
ax^{2}=2x^{2}
Add 2x^{2} to both sides. Anything plus zero gives itself.
x^{2}a=2x^{2}
The equation is in standard form.
\frac{x^{2}a}{x^{2}}=\frac{2x^{2}}{x^{2}}
Divide both sides by x^{2}.
a=\frac{2x^{2}}{x^{2}}
Dividing by x^{2} undoes the multiplication by x^{2}.
a=2
Divide 2x^{2} by x^{2}.
x^{2}=\frac{0}{a-2}
Dividing by a-2 undoes the multiplication by a-2.
x^{2}=0
Divide 0 by a-2.
x=0 x=0
Take the square root of both sides of the equation.
x=0
The equation is now solved. Solutions are the same.
x=\frac{0±\sqrt{0^{2}}}{2\left(a-2\right)}
This equation is in standard form: ax^{2}+bx+c=0. Substitute a-2 for a, 0 for b, and 0 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±0}{2\left(a-2\right)}
Take the square root of 0^{2}.
x=\frac{0}{2a-4}
Multiply 2 times a-2.
x=0
Divide 0 by 2a-4.
ax^{2}-2x^{2}=0
Use the distributive property to multiply a-2 by x^{2}.
ax^{2}=2x^{2}
Add 2x^{2} to both sides. Anything plus zero gives itself.
x^{2}a=2x^{2}
The equation is in standard form.
\frac{x^{2}a}{x^{2}}=\frac{2x^{2}}{x^{2}}
Divide both sides by x^{2}.
a=\frac{2x^{2}}{x^{2}}
Dividing by x^{2} undoes the multiplication by x^{2}.
a=2
Divide 2x^{2} by x^{2}.
Examples
Quadratic equation
{ 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}