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

The solutions to the equation completesquare x^2+2x-9 are (x+1)^2-10

Find the zeros of completesquare x^2+2x-9

The zeros of completesquare x^2+2x-9 are (x+1)^2-10

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complete the square

x^{2} + 2 x - 9

(x + 1)^{2} - 10

Solution steps

x^{2} + 2 x - 9

Write

x^{2} + 2 x - 9

in the form:

x^{2} + 2 a x + a^{2}

2 a = 2 : a = 1

Add and subtract

1^{2}

x^{2} + 2 x - 9 + 1^{2} - 1^{2}

x^{2} + 2 a x + a^{2} = (x + a)^{2}

x^{2} + 2 x + 1^{2} = (x + 1)^{2}

(x + 1)^{2} - 9 - 1^{2}

Simplify

(x + 1)^{2} - 10

x^{2} - x = 20

u^{2} - 3 u + 4 = 0

x^{2} + 2 x + 6

2 (a x^{2} - b^{3}) = b x (4 b - a)

2 x^{2} + x + 2

What are the solutions to the equation completesquare x^2+2x-9 ?
The solutions to the equation completesquare x^2+2x-9 are (x+1)^2-10
Find the zeros of completesquare x^2+2x-9
The zeros of completesquare x^2+2x-9 are (x+1)^2-10