0=7+2x+x^2

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Solution for 0=7+2x+x^2 equation: 


Simplifying
0 = 7 + 2x + x2

Solving
0 = 7 + 2x + x2

Solving for variable 'x'.

Combine like terms: 0 + -7 = -7
-7 + -2x + -1x2 = 7 + 2x + x2 + -7 + -2x + -1x2

Reorder the terms:
-7 + -2x + -1x2 = 7 + -7 + 2x + -2x + x2 + -1x2

Combine like terms: 7 + -7 = 0
-7 + -2x + -1x2 = 0 + 2x + -2x + x2 + -1x2
-7 + -2x + -1x2 = 2x + -2x + x2 + -1x2

Combine like terms: 2x + -2x = 0
-7 + -2x + -1x2 = 0 + x2 + -1x2
-7 + -2x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-7 + -2x + -1x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(7 + 2x + x2) = 0

Ignore the factor -1.

Subproblem 1
Set the factor '(7 + 2x + x2)' equal to zero and attempt to solve:

Simplifying
7 + 2x + x2 = 0

Solving
7 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + 2x + -7 + x2 = 0 + -7

Reorder the terms:
7 + -7 + 2x + x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 2x + x2 = 0 + -7
2x + x2 = 0 + -7

Combine like terms: 0 + -7 = -7
2x + x2 = -7

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = -7 + 1

Reorder the terms:
1 + 2x + x2 = -7 + 1

Combine like terms: -7 + 1 = -6
1 + 2x + x2 = -6

Factor a perfect square on the left side:
(x + 1)(x + 1) = -6

Can't calculate square root of the right side.

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.

The solution to this equation could not be determined.

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