Question

$$P(x)=2x \times x \times x+5x \times x-3x \times x \times x-2$$

Answer

$$P=(5*x^2-2)/x-x^2$$

Solution


Simplify  \(2xxx\)  to  \(2{x}^{3}\).
\[Px=2{x}^{3}+5xx-3xxx-2\]
Use Product Rule: \({x}^{a}{x}^{b}={x}^{a+b}\).
\[Px=2{x}^{3}+5{x}^{2}-3xxx-2\]
Simplify  \(3xxx\)  to  \(3{x}^{3}\).
\[Px=2{x}^{3}+5{x}^{2}-3{x}^{3}-2\]
Simplify  \(2{x}^{3}+5{x}^{2}-3{x}^{3}-2\)  to  \(-{x}^{3}+5{x}^{2}-2\).
\[Px=-{x}^{3}+5{x}^{2}-2\]
Divide both sides by \(x\).
\[P=\frac{-{x}^{3}+5{x}^{2}-2}{x}\]
Simplify  \(\frac{-{x}^{3}+5{x}^{2}-2}{x}\)  to  \(-{x}^{2}+\frac{5{x}^{2}-2}{x}\).
\[P=-{x}^{2}+\frac{5{x}^{2}-2}{x}\]
Regroup terms.
\[P=\frac{5{x}^{2}-2}{x}-{x}^{2}\]