Solve for x
x=\frac{1}{3}\approx 0.333333333
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Linear Equation
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\left( 2x-1 \right) \left( 2x+1 \right) = 4 { x }^{ 2 } -3x
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\left(2x\right)^{2}-1=4x^{2}-3x
Consider \left(2x-1\right)\left(2x+1\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Square 1.
2^{2}x^{2}-1=4x^{2}-3x
Expand \left(2x\right)^{2}.
4x^{2}-1=4x^{2}-3x
Calculate 2 to the power of 2 and get 4.
4x^{2}-1-4x^{2}=-3x
Subtract 4x^{2} from both sides.
-1=-3x
Combine 4x^{2} and -4x^{2} to get 0.
-3x=-1
Swap sides so that all variable terms are on the left hand side.
x=\frac{-1}{-3}
Divide both sides by -3.
x=\frac{1}{3}
Fraction \frac{-1}{-3} can be simplified to \frac{1}{3} by removing the negative sign from both the numerator and the denominator.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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}