Evaluate
\left(2r-3\right)^{2}
Expand
4r^{2}-12r+9
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\left(2r-3\right)^{2}
Multiply 2r-3 and 2r-3 to get \left(2r-3\right)^{2}.
4r^{2}-12r+9
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2r-3\right)^{2}.
\left(2r-3\right)^{2}
Multiply 2r-3 and 2r-3 to get \left(2r-3\right)^{2}.
4r^{2}-12r+9
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(2r-3\right)^{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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