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Simplify: 3/2x^2(x^2-1)+1/4x^2(x^2+x)-3...

Simplify: `3/2x^2(x^2-1)+1/4x^2(x^2+x)-3/4x(x^3-1)`

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`3/2x^2(x^2-1)+1/4x^2(x^2+x)-3/4x(x^3-1)`
`=3/2x^4-3/2x^2+1/4x^4+1/4x^3-3/4x^4+(3/4)x`
`=x^4+1/4x^3-3/2x^2+(3/4)x`
Hence simplified.
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