What is (5x-15)/(x^2-2x-3) ?

The solution to (5x-15)/(x^2-2x-3) is 5/(x+1)

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simplify (5x-15)/(x^2-2x-3)

simplify

\frac{5 x - 15}{x ^{2} - 2 x - 3}

\frac{5}{x + 1}

Solution steps

\frac{5 x - 15}{x ^{2} - 2 x - 3}

Factor

5 x - 15 : 5 (x - 3)

= \frac{5 ( x - 3 )}{x ^{2} - 2 x - 3}

Factor

x^{2} - 2 x - 3 : (x + 1) (x - 3)

= \frac{5 ( x - 3 )}{( x + 1 ) ( x - 3 )}

Cancel the common factor:

x - 3

= \frac{5}{x + 1}

+ 4 z^{2} - 24 z - 18 m + 3 m z

- 144 \div 12

- \frac{3}{2} \times 1

3 (x^{2} + y^{2})^{2}

5 - 18