4x+x^2+4=-91+4

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Solution for 4x+x^2+4=-91+4 equation:


Simplifying
4x + x2 + 4 = -91 + 4

Reorder the terms:
4 + 4x + x2 = -91 + 4

Combine like terms: -91 + 4 = -87
4 + 4x + x2 = -87

Solving
4 + 4x + x2 = -87

Solving for variable 'x'.

Reorder the terms:
4 + 87 + 4x + x2 = -87 + 87

Combine like terms: 4 + 87 = 91
91 + 4x + x2 = -87 + 87

Combine like terms: -87 + 87 = 0
91 + 4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-91' to each side of the equation.
91 + 4x + -91 + x2 = 0 + -91

Reorder the terms:
91 + -91 + 4x + x2 = 0 + -91

Combine like terms: 91 + -91 = 0
0 + 4x + x2 = 0 + -91
4x + x2 = 0 + -91

Combine like terms: 0 + -91 = -91
4x + x2 = -91

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = -91 + 4

Reorder the terms:
4 + 4x + x2 = -91 + 4

Combine like terms: -91 + 4 = -87
4 + 4x + x2 = -87

Factor a perfect square on the left side:
(x + 2)(x + 2) = -87

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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