What are the solutions to the equation x(x-2)=8 ?

The solutions to the equation x(x-2)=8 are x=4,x=-2

Find the zeros of x(x-2)=8

The zeros of x(x-2)=8 are x=4,x=-2

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x (x - 2) = 8

x = 4, x = - 2

Solution steps

x (x - 2) = 8

Expand

x (x - 2) : x^{2} - 2 x

x^{2} - 2 x = 8

Move

8

to the left side

x^{2} - 2 x - 8 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- ( - 2 ) \pm ( - 2 ) ^{2} - 4 \cdot 1 \cdot ( - 8 )}{2 \cdot 1}

(- 2)^{2} - 4 \cdot 1 \cdot (- 8) = 6

x_{1, 2} = \frac{- ( - 2 ) \pm 6}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- ( - 2 ) + 6}{2 \cdot 1}, x_{2} = \frac{- ( - 2 ) - 6}{2 \cdot 1}

x = \frac{- ( - 2 ) + 6}{2 \cdot 1} : 4

x = \frac{- ( - 2 ) - 6}{2 \cdot 1} : - 2

The solutions to the quadratic equation are:

x = 4, x = - 2

2 x + 14 = x + 6

t^{2} - t - 20 = 0

k^{2} = 4 k

5 \cdot \frac{1}{3}

\frac{1}{x} \leq 0

What are the solutions to the equation x(x-2)=8 ?
The solutions to the equation x(x-2)=8 are x=4,x=-2
Find the zeros of x(x-2)=8
The zeros of x(x-2)=8 are x=4,x=-2