Evaluate
8x^{2}+4x-2
Expand
8x^{2}+4x-2
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\frac{\left(2x-1\right)\left(4x^{2}+2x-1\right)}{\frac{1}{2}\left(2x-1\right)}
Factor the expressions that are not already factored.
\frac{4x^{2}+2x-1}{\frac{1}{2}}
Cancel out 2x-1 in both numerator and denominator.
\left(4x^{2}+2x-1\right)\times 2
Divide 4x^{2}+2x-1 by \frac{1}{2} by multiplying 4x^{2}+2x-1 by the reciprocal of \frac{1}{2}.
8x^{2}+4x-2
Use the distributive property to multiply 4x^{2}+2x-1 by 2.
\frac{\left(2x-1\right)\left(4x^{2}+2x-1\right)}{\frac{1}{2}\left(2x-1\right)}
Factor the expressions that are not already factored.
\frac{4x^{2}+2x-1}{\frac{1}{2}}
Cancel out 2x-1 in both numerator and denominator.
\left(4x^{2}+2x-1\right)\times 2
Divide 4x^{2}+2x-1 by \frac{1}{2} by multiplying 4x^{2}+2x-1 by the reciprocal of \frac{1}{2}.
8x^{2}+4x-2
Use the distributive property to multiply 4x^{2}+2x-1 by 2.
Examples
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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