2x^2+15=3(2x+5)

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Solution for 2x^2+15=3(2x+5) equation:


Simplifying
2x2 + 15 = 3(2x + 5)

Reorder the terms:
15 + 2x2 = 3(2x + 5)

Reorder the terms:
15 + 2x2 = 3(5 + 2x)
15 + 2x2 = (5 * 3 + 2x * 3)
15 + 2x2 = (15 + 6x)

Add '-15' to each side of the equation.
15 + -15 + 2x2 = 15 + -15 + 6x

Combine like terms: 15 + -15 = 0
0 + 2x2 = 15 + -15 + 6x
2x2 = 15 + -15 + 6x

Combine like terms: 15 + -15 = 0
2x2 = 0 + 6x
2x2 = 6x

Solving
2x2 = 6x

Solving for variable 'x'.

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

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

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

Ignore the factor 2.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

Set the factor '(-3 + x)' equal to zero and attempt to solve: Simplifying -3 + x = 0 Solving -3 + x = 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 + x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0 + 3 x = 0 + 3 Combine like terms: 0 + 3 = 3 x = 3 Simplifying x = 3

Solution

x = {0, 3}

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