2x(x+3)+5=25

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Solution for 2x(x+3)+5=25 equation:


Simplifying
2x(x + 3) + 5 = 25

Reorder the terms:
2x(3 + x) + 5 = 25
(3 * 2x + x * 2x) + 5 = 25
(6x + 2x2) + 5 = 25

Reorder the terms:
5 + 6x + 2x2 = 25

Solving
5 + 6x + 2x2 = 25

Solving for variable 'x'.

Reorder the terms:
5 + -25 + 6x + 2x2 = 25 + -25

Combine like terms: 5 + -25 = -20
-20 + 6x + 2x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-20 + 6x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-10 + 3x + x2) = 0

Factor a trinomial.
2((-5 + -1x)(2 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

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 = {-5, 2}

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