What are the solutions to the equation x^2+9+8x=0 ?

The solutions to the equation x^2+9+8x=0 are x=-4+sqrt(7),x=-4-sqrt(7)

Find the zeros of x^2+9+8x=0

The zeros of x^2+9+8x=0 are x=-4+sqrt(7),x=-4-sqrt(7)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^{2} + 9 + 8 x = 0

x = - 4 + 7, x = - 4 - 7

Decimal Notation

x = - 1.35424 \dots, x = - 6.64575 \dots

Solution steps

x^{2} + 9 + 8 x = 0

Write in the standard form

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

x^{2} + 8 x + 9 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 8 \pm 8 ^{2} - 4 \cdot 1 \cdot 9}{2 \cdot 1}

8^{2} - 4 \cdot 1 \cdot 9 = 27

x_{1, 2} = \frac{- 8 \pm 2 7}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 8 + 2 7}{2 \cdot 1}, x_{2} = \frac{- 8 - 2 7}{2 \cdot 1}

x = \frac{- 8 + 2 7}{2 \cdot 1} : - 4 + 7

x = \frac{- 8 - 2 7}{2 \cdot 1} : - 4 - 7

The solutions to the quadratic equation are:

x = - 4 + 7, x = - 4 - 7

4 x^{2} - 45 x - 269 = 7 x^{2} - 3 x + 7

2 x^{2} + 48 = - 20 x

5 x^{2} - 24 x + 28 = 0

1 + 2 + 3 + 4 + n = \frac{n ( n + 1 )}{2}

4 + y^{2} = 8 + 4 y

What are the solutions to the equation x^2+9+8x=0 ?
The solutions to the equation x^2+9+8x=0 are x=-4+sqrt(7),x=-4-sqrt(7)
Find the zeros of x^2+9+8x=0
The zeros of x^2+9+8x=0 are x=-4+sqrt(7),x=-4-sqrt(7)