What are the solutions to the equation x^2+x=90 ?

The solutions to the equation x^2+x=90 are x=9,x=-10

Find the zeros of x^2+x=90

The zeros of x^2+x=90 are x=9,x=-10

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x^{2} + x = 90

x = 9, x = - 10

Solution steps

x^{2} + x = 90

Move

90

to the left side

x^{2} + x - 90 = 0

Solve with the quadratic formula

x_{1, 2} = \frac{- 1 \pm 1 ^{2} - 4 \cdot 1 \cdot ( - 90 )}{2 \cdot 1}

1^{2} - 4 \cdot 1 \cdot (- 90) = 19

x_{1, 2} = \frac{- 1 \pm 19}{2 \cdot 1}

Separate the solutions

x_{1} = \frac{- 1 + 19}{2 \cdot 1}, x_{2} = \frac{- 1 - 19}{2 \cdot 1}

x = \frac{- 1 + 19}{2 \cdot 1} : 9

x = \frac{- 1 - 19}{2 \cdot 1} : - 10

The solutions to the quadratic equation are:

x = 9, x = - 10

3 (u + 3) + u = 2 (u - 1) + 3

(\frac{1}{x} + \frac{1}{x} + \frac{1}{x})^{- 1}

9 x^{2} - 3 x y + 6 x - 2 y

x^{2} - 12 x + 31 = 0

2 y + (- 23) = - 10 - (- 39)

What are the solutions to the equation x^2+x=90 ?
The solutions to the equation x^2+x=90 are x=9,x=-10
Find the zeros of x^2+x=90
The zeros of x^2+x=90 are x=9,x=-10