(2x+5)+(5x+3)=x^2

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Solution for (2x+5)+(5x+3)=x^2 equation:


Simplifying
(2x + 5) + (5x + 3) = x2

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

Remove parenthesis around (5 + 2x)
5 + 2x + (5x + 3) = x2

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

Remove parenthesis around (3 + 5x)
5 + 2x + 3 + 5x = x2

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

Combine like terms: 5 + 3 = 8
8 + 2x + 5x = x2

Combine like terms: 2x + 5x = 7x
8 + 7x = x2

Solving
8 + 7x = x2

Solving for variable 'x'.

Combine like terms: x2 + -1x2 = 0
8 + 7x + -1x2 = 0

Factor a trinomial.
(8 + -1x)(1 + x) = 0

Subproblem 1

Set the factor '(8 + -1x)' equal to zero and attempt to solve: Simplifying 8 + -1x = 0 Solving 8 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -1x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 0 + -8 -1x = 0 + -8 Combine like terms: 0 + -8 = -8 -1x = -8 Divide each side by '-1'. x = 8 Simplifying x = 8

Subproblem 2

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

Solution

x = {8, -1}

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