Evaluate
\left(x-3\right)\left(x-1\right)
Expand
x^{2}-4x+3
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x^{2}-4x+4-1
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-2\right)^{2}.
x^{2}-4x+3
Subtract 1 from 4 to get 3.
x^{2}-4x+4-1
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-2\right)^{2}.
x^{2}-4x+3
Subtract 1 from 4 to get 3.
Examples
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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