x^2+16x=-65

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Solution for x^2+16x=-65 equation:


Simplifying
x2 + 16x = -65

Reorder the terms:
16x + x2 = -65

Solving
16x + x2 = -65

Solving for variable 'x'.

Reorder the terms:
65 + 16x + x2 = -65 + 65

Combine like terms: -65 + 65 = 0
65 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-65' to each side of the equation.
65 + 16x + -65 + x2 = 0 + -65

Reorder the terms:
65 + -65 + 16x + x2 = 0 + -65

Combine like terms: 65 + -65 = 0
0 + 16x + x2 = 0 + -65
16x + x2 = 0 + -65

Combine like terms: 0 + -65 = -65
16x + x2 = -65

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = -65 + 64

Reorder the terms:
64 + 16x + x2 = -65 + 64

Combine like terms: -65 + 64 = -1
64 + 16x + x2 = -1

Factor a perfect square on the left side:
(x + 8)(x + 8) = -1

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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