What are the solutions to the equation completesquare x^2+9x+20=0 ?

The solutions to the equation completesquare x^2+9x+20=0 are x=-4,x=-5

Find the zeros of completesquare x^2+9x+20=0

The zeros of completesquare x^2+9x+20=0 are x=-4,x=-5

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x^{2} + 9 x + 20 = 0

x = - 4, x = - 5

Solution steps

x^{2} + 9 x + 20 = 0

Move

20

to the right side

x^{2} + 9 x = - 20

Rewrite in the form

(x + a)^{2} = b

(x + \frac{9}{2})^{2} = \frac{1}{4}

For

the solutions are

f (x) = a, - a

Solve

x + \frac{9}{2} = \frac{1}{4} : x = - 4

Solve

x + \frac{9}{2} = - \frac{1}{4} : x = - 5

The solutions to the quadratic equation are:

x = - 4, x = - 5

a (x) = x^{2} - x + 7, a (1)

4 x^{2} - 12 x - 63 = 0

x^{2} + 6 x + 1 = - 4

x^{2} + 3 x - 18 = 0

x^{2} + 8 x + 5 = 0

What are the solutions to the equation completesquare x^2+9x+20=0 ?
The solutions to the equation completesquare x^2+9x+20=0 are x=-4,x=-5
Find the zeros of completesquare x^2+9x+20=0
The zeros of completesquare x^2+9x+20=0 are x=-4,x=-5