x^2+7x+31=1

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Solution for x^2+7x+31=1 equation:


Simplifying
x2 + 7x + 31 = 1

Reorder the terms:
31 + 7x + x2 = 1

Solving
31 + 7x + x2 = 1

Solving for variable 'x'.

Reorder the terms:
31 + -1 + 7x + x2 = 1 + -1

Combine like terms: 31 + -1 = 30
30 + 7x + x2 = 1 + -1

Combine like terms: 1 + -1 = 0
30 + 7x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-30' to each side of the equation.
30 + 7x + -30 + x2 = 0 + -30

Reorder the terms:
30 + -30 + 7x + x2 = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 7x + x2 = 0 + -30
7x + x2 = 0 + -30

Combine like terms: 0 + -30 = -30
7x + x2 = -30

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 = -30 + 12.25

Reorder the terms:
12.25 + 7x + x2 = -30 + 12.25

Combine like terms: -30 + 12.25 = -17.75
12.25 + 7x + x2 = -17.75

Factor a perfect square on the left side:
(x + 3.5)(x + 3.5) = -17.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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