What is expand ((x+87)(x+20))/2 ?

The solution to expand ((x+87)(x+20))/2 is (x^2)/2+(107x)/2+870

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expand ((x+87)(x+20))/2

expand

\frac{( x + 87 ) ( x + 20 )}{2}

\frac{x ^{2}}{2} + \frac{107 x}{2} + 870

Solution steps

\frac{( x + 87 ) ( x + 20 )}{2}

Expand

(x + 87) (x + 20) : x^{2} + 107 x + 1740

= \frac{x ^{2} + 107 x + 1740}{2}

Apply the fraction rule:

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

\frac{x ^{2} + 107 x + 1740}{2} = \frac{x ^{2}}{2} + \frac{107 x}{2} + \frac{1740}{2}

= \frac{x ^{2}}{2} + \frac{107 x}{2} + \frac{1740}{2}

Divide the numbers:

\frac{1740}{2} = 870

= \frac{x ^{2}}{2} + \frac{107 x}{2} + 870

g (b + e)

(3 x^{2} - 2 y^{2}) d y

2 - 3 (x^{2} + 2Δ x + Δ x^{2})

\frac{( 3244 - 283 x ) 3}{5}

(f \circ g) (x + 2) (2 x - 1)

What is expand ((x+87)(x+20))/2 ?
The solution to expand ((x+87)(x+20))/2 is (x^2)/2+(107x)/2+870