What are the solutions to the equation x^2+8x+9=-9 ?

The solutions to the equation x^2+8x+9=-9 are x=-4+sqrt(2)i,x=-4-sqrt(2)i

Find the zeros of x^2+8x+9=-9

The zeros of x^2+8x+9=-9 are x=-4+sqrt(2)i,x=-4-sqrt(2)i

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

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

x = - 4 + 2 i, x = - 4 - 2 i

Solution steps

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

Move

9

to the left side

x^{2} + 8 x + 18 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 8 \pm 8 ^{2} - 4 \cdot 1 \cdot 18}{2 \cdot 1}

Simplify

8^{2} - 4 \cdot 1 \cdot 18 : 22 i

x_{1, 2} = \frac{- 8 \pm 2 2 i}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 8 + 2 2 i}{2 \cdot 1}, x_{2} = \frac{- 8 - 2 2 i}{2 \cdot 1}

x = \frac{- 8 + 2 2 i}{2 \cdot 1} : - 4 + 2 i

x = \frac{- 8 - 2 2 i}{2 \cdot 1} : - 4 - 2 i

The solutions to the quadratic equation are:

x = - 4 + 2 i, x = - 4 - 2 i

x^{2} + 50 x + 336 = 0

(x - 3)^{2} = x - 1

- 3 x^{2} + 4 x + 5 = 0

x^{2} - 28 x

x^{2} - 13 x

What are the solutions to the equation x^2+8x+9=-9 ?
The solutions to the equation x^2+8x+9=-9 are x=-4+sqrt(2)i,x=-4-sqrt(2)i
Find the zeros of x^2+8x+9=-9
The zeros of x^2+8x+9=-9 are x=-4+sqrt(2)i,x=-4-sqrt(2)i