Evaluate
\frac{\left(\left(1-x\right)\left(x-5\right)\right)^{2}}{4}
Expand
\frac{x^{4}}{4}-3x^{3}+\frac{23x^{2}}{2}-15x+6.25
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0.25x^{4}-3x^{3}+11.5x^{2}-15x+6.25
Square -0.5x^{2}+3x-2.5.
0.25x^{4}-3x^{3}+11.5x^{2}-15x+6.25
Square -0.5x^{2}+3x-2.5.
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