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

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

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

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

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x^{2} + 8 x = - 9

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

Solution steps

x^{2} + 8 x = - 9

Move

9

to the left side

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} - 5 x - 5 = 0

\frac{1}{5} q^{2} + 10 = 86 - 6 q - 3 q^{2}

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

(x - 1) (x - 2) = 12

- 2 x^{2} + 3 x + 9 = 0

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