What are the solutions to the equation completesquare x^2+2x-9=0 ?

The solutions to the equation completesquare x^2+2x-9=0 are x=sqrt(10)-1,x=-sqrt(10)-1

Find the zeros of completesquare x^2+2x-9=0

The zeros of completesquare x^2+2x-9=0 are x=sqrt(10)-1,x=-sqrt(10)-1

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

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

x = 10 - 1, x = - 10 - 1

Decimal Notation

x = 2.16227 \dots, x = - 4.16227 \dots

Solution steps

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

Move

9

to the right side

x^{2} + 2 x = 9

Rewrite in the form

(x + a)^{2} = b

(x + 1)^{2} = 10

For

the solutions are

f (x) = a, - a

Solve

x + 1 = 10 : x = 10 - 1

Solve

x + 1 = - 10 : x = - 10 - 1

The solutions to the quadratic equation are:

x = 10 - 1, x = - 10 - 1

x, - 493 + 46 x - x^{2} = 0

x^{2} - 9.9 x - 312.5 = 0

E, S = \frac{E ^{2}}{Z}

8 + 4 x - x^{2}

(x - 1)^{2} - 80 = 0

What are the solutions to the equation completesquare x^2+2x-9=0 ?
The solutions to the equation completesquare x^2+2x-9=0 are x=sqrt(10)-1,x=-sqrt(10)-1
Find the zeros of completesquare x^2+2x-9=0
The zeros of completesquare x^2+2x-9=0 are x=sqrt(10)-1,x=-sqrt(10)-1