4x^2+9=2x^2+3(5x+3)

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Solution for 4x^2+9=2x^2+3(5x+3) equation:


Simplifying
4x2 + 9 = 2x2 + 3(5x + 3)

Reorder the terms:
9 + 4x2 = 2x2 + 3(5x + 3)

Reorder the terms:
9 + 4x2 = 2x2 + 3(3 + 5x)
9 + 4x2 = 2x2 + (3 * 3 + 5x * 3)
9 + 4x2 = 2x2 + (9 + 15x)

Reorder the terms:
9 + 4x2 = 9 + 15x + 2x2

Add '-9' to each side of the equation.
9 + -9 + 4x2 = 9 + 15x + -9 + 2x2

Combine like terms: 9 + -9 = 0
0 + 4x2 = 9 + 15x + -9 + 2x2
4x2 = 9 + 15x + -9 + 2x2

Reorder the terms:
4x2 = 9 + -9 + 15x + 2x2

Combine like terms: 9 + -9 = 0
4x2 = 0 + 15x + 2x2
4x2 = 15x + 2x2

Solving
4x2 = 15x + 2x2

Solving for variable 'x'.

Reorder the terms:
-15x + 4x2 + -2x2 = 15x + 2x2 + -15x + -2x2

Combine like terms: 4x2 + -2x2 = 2x2
-15x + 2x2 = 15x + 2x2 + -15x + -2x2

Reorder the terms:
-15x + 2x2 = 15x + -15x + 2x2 + -2x2

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

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

Factor out the Greatest Common Factor (GCF), 'x'.
x(-15 + 2x) = 0

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 '(-15 + 2x)' equal to zero and attempt to solve: Simplifying -15 + 2x = 0 Solving -15 + 2x = 0 Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + 2x = 0 + 15 Combine like terms: -15 + 15 = 0 0 + 2x = 0 + 15 2x = 0 + 15 Combine like terms: 0 + 15 = 15 2x = 15 Divide each side by '2'. x = 7.5 Simplifying x = 7.5

Solution

x = {0, 7.5}

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