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

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

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

expand

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

x - \frac{1}{x}

Solution steps

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

Expand

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

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

Apply the fraction rule:

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

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

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

Cancel

\frac{x ^{2}}{x} : x

= x - \frac{1}{x}

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

8 (e^{- 0.4 t} - e^{- 0.6 t})

(3 x + 8 y - 24 = 0,) (9 x - 2 y - 18 = 0)

(7) (2 x - y = 13)

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