2x^2+2x+1=x^2+3x+7

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Solution for 2x^2+2x+1=x^2+3x+7 equation:


Simplifying
2x2 + 2x + 1 = x2 + 3x + 7

Reorder the terms:
1 + 2x + 2x2 = x2 + 3x + 7

Reorder the terms:
1 + 2x + 2x2 = 7 + 3x + x2

Solving
1 + 2x + 2x2 = 7 + 3x + x2

Solving for variable 'x'.

Reorder the terms:
1 + -7 + 2x + -3x + 2x2 + -1x2 = 7 + 3x + x2 + -7 + -3x + -1x2

Combine like terms: 1 + -7 = -6
-6 + 2x + -3x + 2x2 + -1x2 = 7 + 3x + x2 + -7 + -3x + -1x2

Combine like terms: 2x + -3x = -1x
-6 + -1x + 2x2 + -1x2 = 7 + 3x + x2 + -7 + -3x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
-6 + -1x + 1x2 = 7 + 3x + x2 + -7 + -3x + -1x2

Reorder the terms:
-6 + -1x + 1x2 = 7 + -7 + 3x + -3x + x2 + -1x2

Combine like terms: 7 + -7 = 0
-6 + -1x + 1x2 = 0 + 3x + -3x + x2 + -1x2
-6 + -1x + 1x2 = 3x + -3x + x2 + -1x2

Combine like terms: 3x + -3x = 0
-6 + -1x + 1x2 = 0 + x2 + -1x2
-6 + -1x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-6 + -1x + 1x2 = 0

Factor a trinomial.
(-2 + -1x)(3 + -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 '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-2, 3}

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