What is expand ((-15+x)(15+x))/(25) ?

The solution to expand ((-15+x)(15+x))/(25) is (x^2)/(25)-9

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expand ((-15+x)(15+x))/(25)

expand

\frac{( - 15 + x ) ( 15 + x )}{25}

\frac{x ^{2}}{25} - 9

Solution steps

\frac{( - 15 + x ) ( 15 + x )}{25}

Expand

(- 15 + x) (15 + x) : x^{2} - 225

= \frac{x ^{2} - 225}{25}

Apply the fraction rule:

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

\frac{x ^{2} - 225}{25} = \frac{x ^{2}}{25} - \frac{225}{25}

= \frac{x ^{2}}{25} - \frac{225}{25}

Divide the numbers:

\frac{225}{25} = 9

= \frac{x ^{2}}{25} - 9

\frac{13 ( 81 - 36 y + 4 y ^{2} )}{9}

\frac{( ( n ) ( 2 n - 1 ) ( 2 n + 1 ) )}{3}

\frac{3 y ^{4} ( 2 u ^{5} - 1 )}{u}

- (x ln (x) - x) (y x)

\frac{2 ( 3 17 - 1 )}{19}

What is expand ((-15+x)(15+x))/(25) ?
The solution to expand ((-15+x)(15+x))/(25) is (x^2)/(25)-9