Expand
x^{2}-2x-4
Evaluate
\left(x-1\right)^{2}-5
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x^{2}-2x+1-5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-1\right)^{2}.
x^{2}-2x-4
Subtract 5 from 1 to get -4.
x^{2}-2x+1-5
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-1\right)^{2}.
x^{2}-2x-4
Subtract 5 from 1 to get -4.
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{ x } ^ { 2 } - 4 x - 5 = 0
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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