Evaluate
\frac{215a^{2}}{1-a}
Expand
\frac{215a^{2}}{1-a}
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\frac{215^{2}a^{2}}{215\left(1-a\right)}
Expand \left(215a\right)^{2}.
\frac{46225a^{2}}{215\left(1-a\right)}
Calculate 215 to the power of 2 and get 46225.
\frac{215a^{2}}{-a+1}
Cancel out 215 in both numerator and denominator.
\frac{215^{2}a^{2}}{215\left(1-a\right)}
Expand \left(215a\right)^{2}.
\frac{46225a^{2}}{215\left(1-a\right)}
Calculate 215 to the power of 2 and get 46225.
\frac{215a^{2}}{-a+1}
Cancel out 215 in both numerator and denominator.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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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}