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

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

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expand ((b+1)(b-1))/b

expand

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

b - \frac{1}{b}

Solution steps

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

Expand

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

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

Apply the fraction rule:

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

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

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

Cancel

\frac{b ^{2}}{b} : b

= b - \frac{1}{b}

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\frac{64 u ^{2}}{( u - 1 ) ^{2}}

∣ - 5 \cdot (1 + 3 ∣)