simplify 2/(x-4)-7x

Solution

simplify

\frac{2}{x - 4} - 7 x

\frac{- 7 x ^{2} + 28 x + 2}{x - 4}

Solution steps

\frac{2}{x - 4} - 7 x

Apply the fraction rule:

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

= \frac{- 7 x ( x - 4 ) + 2}{x - 4}

Simplify

- 7 x (x - 4) + 2 : - 7 x^{2} + 28 x + 2

= \frac{- 7 x ^{2} + 28 x + 2}{x - 4}

\frac{6 a ^{2} x ^{3}}{\frac{a ^{2} x}{5}}

(2 m)^{3}

- 11 x^{5} (- 9 x^{3} y^{4})

\frac{7}{2 x} + \frac{5}{6 x}

lo g_{5} (120)