(2x+1)(x-2)+1=x(x+1)-5

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Solution for (2x+1)(x-2)+1=x(x+1)-5 equation:


Simplifying
(2x + 1)(x + -2) + 1 = x(x + 1) + -5

Reorder the terms:
(1 + 2x)(x + -2) + 1 = x(x + 1) + -5

Reorder the terms:
(1 + 2x)(-2 + x) + 1 = x(x + 1) + -5

Multiply (1 + 2x) * (-2 + x)
(1(-2 + x) + 2x * (-2 + x)) + 1 = x(x + 1) + -5
((-2 * 1 + x * 1) + 2x * (-2 + x)) + 1 = x(x + 1) + -5
((-2 + 1x) + 2x * (-2 + x)) + 1 = x(x + 1) + -5
(-2 + 1x + (-2 * 2x + x * 2x)) + 1 = x(x + 1) + -5
(-2 + 1x + (-4x + 2x2)) + 1 = x(x + 1) + -5

Combine like terms: 1x + -4x = -3x
(-2 + -3x + 2x2) + 1 = x(x + 1) + -5

Reorder the terms:
-2 + 1 + -3x + 2x2 = x(x + 1) + -5

Combine like terms: -2 + 1 = -1
-1 + -3x + 2x2 = x(x + 1) + -5

Reorder the terms:
-1 + -3x + 2x2 = x(1 + x) + -5
-1 + -3x + 2x2 = (1 * x + x * x) + -5
-1 + -3x + 2x2 = (1x + x2) + -5

Reorder the terms:
-1 + -3x + 2x2 = -5 + 1x + x2

Solving
-1 + -3x + 2x2 = -5 + 1x + x2

Solving for variable 'x'.

Reorder the terms:
-1 + 5 + -3x + -1x + 2x2 + -1x2 = -5 + 1x + x2 + 5 + -1x + -1x2

Combine like terms: -1 + 5 = 4
4 + -3x + -1x + 2x2 + -1x2 = -5 + 1x + x2 + 5 + -1x + -1x2

Combine like terms: -3x + -1x = -4x
4 + -4x + 2x2 + -1x2 = -5 + 1x + x2 + 5 + -1x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
4 + -4x + 1x2 = -5 + 1x + x2 + 5 + -1x + -1x2

Reorder the terms:
4 + -4x + 1x2 = -5 + 5 + 1x + -1x + x2 + -1x2

Combine like terms: -5 + 5 = 0
4 + -4x + 1x2 = 0 + 1x + -1x + x2 + -1x2
4 + -4x + 1x2 = 1x + -1x + x2 + -1x2

Combine like terms: 1x + -1x = 0
4 + -4x + 1x2 = 0 + x2 + -1x2
4 + -4x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
4 + -4x + 1x2 = 0

Factor a trinomial.
(2 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {2, 2}

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