x(x+1)=3x-10

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Solution for x(x+1)=3x-10 equation:


Simplifying
x(x + 1) = 3x + -10

Reorder the terms:
x(1 + x) = 3x + -10
(1 * x + x * x) = 3x + -10
(1x + x2) = 3x + -10

Reorder the terms:
1x + x2 = -10 + 3x

Solving
1x + x2 = -10 + 3x

Solving for variable 'x'.

Reorder the terms:
10 + 1x + -3x + x2 = -10 + 3x + 10 + -3x

Combine like terms: 1x + -3x = -2x
10 + -2x + x2 = -10 + 3x + 10 + -3x

Reorder the terms:
10 + -2x + x2 = -10 + 10 + 3x + -3x

Combine like terms: -10 + 10 = 0
10 + -2x + x2 = 0 + 3x + -3x
10 + -2x + x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
10 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + -2x + -10 + x2 = 0 + -10

Reorder the terms:
10 + -10 + -2x + x2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -2x + x2 = 0 + -10
-2x + x2 = 0 + -10

Combine like terms: 0 + -10 = -10
-2x + x2 = -10

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 = -10 + 1

Reorder the terms:
1 + -2x + x2 = -10 + 1

Combine like terms: -10 + 1 = -9
1 + -2x + x2 = -9

Factor a perfect square on the left side:
(x + -1)(x + -1) = -9

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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