x(x+2)=5x-10

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Solution for x(x+2)=5x-10 equation:


Simplifying
x(x + 2) = 5x + -10

Reorder the terms:
x(2 + x) = 5x + -10
(2 * x + x * x) = 5x + -10
(2x + x2) = 5x + -10

Reorder the terms:
2x + x2 = -10 + 5x

Solving
2x + x2 = -10 + 5x

Solving for variable 'x'.

Reorder the terms:
10 + 2x + -5x + x2 = -10 + 5x + 10 + -5x

Combine like terms: 2x + -5x = -3x
10 + -3x + x2 = -10 + 5x + 10 + -5x

Reorder the terms:
10 + -3x + x2 = -10 + 10 + 5x + -5x

Combine like terms: -10 + 10 = 0
10 + -3x + x2 = 0 + 5x + -5x
10 + -3x + x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
10 + -3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -3x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + -3x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -3x + x2 = 0 + -10
-3x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
-3x + x2 = -10

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -10 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -10 + 2.25

Combine like terms: -10 + 2.25 = -7.75
2.25 + -3x + x2 = -7.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -7.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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