What is expand ((x-2)(x+1))/2 ?

The solution to expand ((x-2)(x+1))/2 is (x^2)/2-x/2-1

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expand ((x-2)(x+1))/2

expand

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

\frac{x ^{2}}{2} - \frac{x}{2} - 1

Solution steps

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

Expand

(x - 2) (x + 1) : x^{2} - x - 2

= \frac{x ^{2} - x - 2}{2}

Apply the fraction rule:

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

\frac{x ^{2} - x - 2}{2} = \frac{x ^{2}}{2} - \frac{x}{2} - \frac{2}{2}

= \frac{x ^{2}}{2} - \frac{x}{2} - \frac{2}{2}

Apply rule

\frac{a}{a} = 1

\frac{2}{2} = 1

= \frac{x ^{2}}{2} - \frac{x}{2} - 1

l (e^{t} + 1) h (t - 2)

(\frac{π}{2} + 2) r

2 π (81 h - h^{3})

x (1 + 23) - 3 - 63

(- 82) + (- 30)

What is expand ((x-2)(x+1))/2 ?
The solution to expand ((x-2)(x+1))/2 is (x^2)/2-x/2-1