What are the solutions to the equation 5x^2-18=x ?

The solutions to the equation 5x^2-18=x are x=2,x=-9/5

Find the zeros of 5x^2-18=x

The zeros of 5x^2-18=x are x=2,x=-9/5

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

5 x^{2} - 18 = x

x = 2, x = - \frac{9}{5}

Decimal Notation

x = 2, x = - 1.8

Solution steps

5 x^{2} - 18 = x

Move

x

to the left side

5 x^{2} - 18 - x = 0

Write in the standard form

a x^{2} + b x + c = 0

5 x^{2} - x - 18 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 1 ) \pm ( - 1 ) ^{2} - 4 \cdot 5 ( - 18 )}{2 \cdot 5}

(- 1)^{2} - 4 \cdot 5 (- 18) = 19

x_{1, 2} = \frac{- ( - 1 ) \pm 19}{2 \cdot 5}

Separate the solutions

x_{1} = \frac{- ( - 1 ) + 19}{2 \cdot 5}, x_{2} = \frac{- ( - 1 ) - 19}{2 \cdot 5}

x = \frac{- ( - 1 ) + 19}{2 \cdot 5} : 2

x = \frac{- ( - 1 ) - 19}{2 \cdot 5} : - \frac{9}{5}

The solutions to the quadratic equation are:

x = 2, x = - \frac{9}{5}

a^{2} + 24 a + 135 = 0

5 x^{2} + 23 x = 10

4 z^{2} + 14 z - 3 = 12 z

(2 x + 4)^{2} - 5 = 31

x^{2} - 3 (x + 2) + 8 = 0

What are the solutions to the equation 5x^2-18=x ?
The solutions to the equation 5x^2-18=x are x=2,x=-9/5
Find the zeros of 5x^2-18=x
The zeros of 5x^2-18=x are x=2,x=-9/5