What is expand (90-x(90-x))/2 ?

The solution to expand (90-x(90-x))/2 is (x^2)/2-45x+45

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expand (90-x(90-x))/2

expand

\frac{90 - x ( 90 - x )}{2}

\frac{x ^{2}}{2} - 45 x + 45

Solution steps

\frac{90 - x ( 90 - x )}{2}

Expand

90 - x (90 - x) : 90 - 90 x + x^{2}

= \frac{90 - 90 x + x ^{2}}{2}

Apply the fraction rule:

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

\frac{90 - 90 x + x ^{2}}{2} = \frac{90}{2} - \frac{90 x}{2} + \frac{x ^{2}}{2}

= \frac{90}{2} - \frac{90 x}{2} + \frac{x ^{2}}{2}

Divide the numbers:

\frac{90}{2} = 45

= 45 - 45 x + \frac{x ^{2}}{2}

Rewrite in standard form

= \frac{x ^{2}}{2} - 45 x + 45

i ((2 + i) x - i y = 2)

[(x - 2) e^{x}]

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

\frac{3 ( 3 t - 2 ) ^{2} ( 3 t - 77 )}{( t - 9 ) ^{3}}

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

What is expand (90-x(90-x))/2 ?
The solution to expand (90-x(90-x))/2 is (x^2)/2-45x+45