54=-7x-x^2

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Solution for 54=-7x-x^2 equation:


Simplifying
54 = -7x + -1x2

Solving
54 = -7x + -1x2

Solving for variable 'x'.

Reorder the terms:
54 + 7x + x2 = -7x + 7x + -1x2 + x2

Combine like terms: -7x + 7x = 0
54 + 7x + x2 = 0 + -1x2 + x2
54 + 7x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
54 + 7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-54' to each side of the equation.
54 + 7x + -54 + x2 = 0 + -54

Reorder the terms:
54 + -54 + 7x + x2 = 0 + -54

Combine like terms: 54 + -54 = 0
0 + 7x + x2 = 0 + -54
7x + x2 = 0 + -54

Combine like terms: 0 + -54 = -54
7x + x2 = -54

The x term is 7x.  Take half its coefficient (3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
7x + 12.25 + x2 = -54 + 12.25

Reorder the terms:
12.25 + 7x + x2 = -54 + 12.25

Combine like terms: -54 + 12.25 = -41.75
12.25 + 7x + x2 = -41.75

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = -41.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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