What is expand (a(-1-2a^2))/2 ?

The solution to expand (a(-1-2a^2))/2 is -a^3-a/2

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expand (a(-1-2a^2))/2

expand

\frac{a ( - 1 - 2 a ^{2} )}{2}

- a^{3} - \frac{a}{2}

Solution steps

\frac{a ( - 1 - 2 a ^{2} )}{2}

Expand

a (- 1 - 2 a^{2}) : - a - 2 a^{3}

= \frac{- a - 2 a ^{3}}{2}

Apply the fraction rule:

\frac{a \pm b}{c} = \frac{a}{c} \pm \frac{b}{c}

\frac{- a - 2 a ^{3}}{2} = - \frac{a}{2} - \frac{2 a ^{3}}{2}

= - \frac{a}{2} - \frac{2 a ^{3}}{2}

Divide the numbers:

\frac{2}{2} = 1

= - \frac{a}{2} - a^{3}

Rewrite in standard form

= - a^{3} - \frac{a}{2}

\frac{( 3 ln ( 6 ) - 5 ) ^{2}}{2}

\frac{4 x ^{2} - 4 x + 2}{( 2 x - 1 ) ^{2}}

\frac{( x + 5 ) ( 5 x + 10 )}{( x - 5 ) ^{2}}

4 w^{9 (7 w^{2} + 2 w)}

(36 - 9 x = x - 4) \cdot 20

What is expand (a(-1-2a^2))/2 ?
The solution to expand (a(-1-2a^2))/2 is -a^3-a/2