What are the solutions to the equation x^2-1=399 ?

The solutions to the equation x^2-1=399 are x=20,x=-20

Find the zeros of x^2-1=399

The zeros of x^2-1=399 are x=20,x=-20

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^{2} - 1 = 399

x = 20, x = - 20

Solution steps

x^{2} - 1 = 399

Move

1

to the right side

x^{2} = 400

For

x^{2} = f (a)

the solutions are

x = f (a), - f (a)

x = 400, x = - 400

400 = 20

- 400 = - 20

x = 20, x = - 20

x^{2} + 9 x + 30 = 0

a^{2} = 144

a^{2} = 100

(m^{2} + 2 m - 1) = 0

b^{2} = 36

What are the solutions to the equation x^2-1=399 ?
The solutions to the equation x^2-1=399 are x=20,x=-20
Find the zeros of x^2-1=399
The zeros of x^2-1=399 are x=20,x=-20