What are the solutions to the equation x^2+8x=65 ?

The solutions to the equation x^2+8x=65 are x=5,x=-13

Find the zeros of x^2+8x=65

The zeros of x^2+8x=65 are x=5,x=-13

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x^{2} + 8 x = 65

x = 5, x = - 13

Solution steps

x^{2} + 8 x = 65

Move

65

to the left side

x^{2} + 8 x - 65 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 8 \pm 8 ^{2} - 4 \cdot 1 \cdot ( - 65 )}{2 \cdot 1}

8^{2} - 4 \cdot 1 \cdot (- 65) = 18

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

Separate the solutions

x_{1} = \frac{- 8 + 18}{2 \cdot 1}, x_{2} = \frac{- 8 - 18}{2 \cdot 1}

x = \frac{- 8 + 18}{2 \cdot 1} : 5

x = \frac{- 8 - 18}{2 \cdot 1} : - 13

The solutions to the quadratic equation are:

x = 5, x = - 13

5 x^{2} - 18 x + 9 \leq 0

p^{2} + 3 p - 54

(n + 1) (n + 1)!

9 u^{2} - 80 u - 9

y (x - 2) - 7 (x - 2)

What are the solutions to the equation x^2+8x=65 ?
The solutions to the equation x^2+8x=65 are x=5,x=-13
Find the zeros of x^2+8x=65
The zeros of x^2+8x=65 are x=5,x=-13