What is the answer to x^{-2}+9x^{-1}+8=0 ?

The answer to x^{-2}+9x^{-1}+8=0 is x=-1/8 ,x=-1

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^{-2}+9x^{-1}+8=0

x^{- 2} + 9 x^{- 1} + 8 = 0

x = - \frac{1}{8}, x = - 1

Decimal Notation

x = - 0.125, x = - 1

Solution steps

x^{- 2} + 9 x^{- 1} + 8 = 0

Refine

\frac{1}{x ^{2}} + \frac{9}{x} + 8 = 0

Multiply by LCM

1 + 9 x + 8 x^{2} = 0

Solve

1 + 9 x + 8 x^{2} = 0 : x = - \frac{1}{8}, x = - 1

x = - \frac{1}{8}, x = - 1

Verify Solutions

Find undefined (singularity) points:

x = 0

Combine undefined points with solutions:

x = - \frac{1}{8}, x = - 1

x^{- 1} + 1 = x

1.4 = \frac{2.65}{x - 1}

\frac{- 2}{3} + \frac{8}{3 x} = 2

\frac{x + 5}{4 x - 3} = \frac{2}{5}

v = \frac{d}{t - m}, t

What is the answer to x^{-2}+9x^{-1}+8=0 ?
The answer to x^{-2}+9x^{-1}+8=0 is x=-1/8 ,x=-1
Solve for x: x^{-2}+9x^{-1}+8=0
The solution is x=-1/8 ,x=-1