x(x+6)=7x-2

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Solution for x(x+6)=7x-2 equation:


Simplifying
x(x + 6) = 7x + -2

Reorder the terms:
x(6 + x) = 7x + -2
(6 * x + x * x) = 7x + -2
(6x + x2) = 7x + -2

Reorder the terms:
6x + x2 = -2 + 7x

Solving
6x + x2 = -2 + 7x

Solving for variable 'x'.

Reorder the terms:
2 + 6x + -7x + x2 = -2 + 7x + 2 + -7x

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

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

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

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

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -1x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -1x + x2 = 0 + -2

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

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

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = -2 + 0.25

Reorder the terms:
0.25 + -1x + x2 = -2 + 0.25

Combine like terms: -2 + 0.25 = -1.75
0.25 + -1x + x2 = -1.75

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = -1.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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