What are the solutions to the equation x^2+8x=7 ?

The solutions to the equation x^2+8x=7 are x=-4+sqrt(23),x=-4-sqrt(23)

Find the zeros of x^2+8x=7

The zeros of x^2+8x=7 are x=-4+sqrt(23),x=-4-sqrt(23)

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x^{2} + 8 x = 7

x = - 4 + 23, x = - 4 - 23

Decimal Notation

x = 0.79583 \dots, x = - 8.79583 \dots

Solution steps

x^{2} + 8 x = 7

Move

7

to the left side

x^{2} + 8 x - 7 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 8 \pm 8 ^{2} - 4 \cdot 1 \cdot ( - 7 )}{2 \cdot 1}

8^{2} - 4 \cdot 1 \cdot (- 7) = 223

x_{1, 2} = \frac{- 8 \pm 2 23}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 8 + 2 23}{2 \cdot 1}, x_{2} = \frac{- 8 - 2 23}{2 \cdot 1}

x = \frac{- 8 + 2 23}{2 \cdot 1} : - 4 + 23

x = \frac{- 8 - 2 23}{2 \cdot 1} : - 4 - 23

The solutions to the quadratic equation are:

x = - 4 + 23, x = - 4 - 23

343 x^{3} - 512

y^{2} - y - 12

lo g_{2} (0.2)

- 16 (n + 2) - 15 < 1

- \frac{7}{6} + 8

What are the solutions to the equation x^2+8x=7 ?
The solutions to the equation x^2+8x=7 are x=-4+sqrt(23),x=-4-sqrt(23)
Find the zeros of x^2+8x=7
The zeros of x^2+8x=7 are x=-4+sqrt(23),x=-4-sqrt(23)