x(3+2x)=(2x+1)(x-3)

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Solution for x(3+2x)=(2x+1)(x-3) equation:


Simplifying
x(3 + 2x) = (2x + 1)(x + -3)
(3 * x + 2x * x) = (2x + 1)(x + -3)
(3x + 2x2) = (2x + 1)(x + -3)

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

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

Multiply (1 + 2x) * (-3 + x)
3x + 2x2 = (1(-3 + x) + 2x * (-3 + x))
3x + 2x2 = ((-3 * 1 + x * 1) + 2x * (-3 + x))
3x + 2x2 = ((-3 + 1x) + 2x * (-3 + x))
3x + 2x2 = (-3 + 1x + (-3 * 2x + x * 2x))
3x + 2x2 = (-3 + 1x + (-6x + 2x2))

Combine like terms: 1x + -6x = -5x
3x + 2x2 = (-3 + -5x + 2x2)

Add '-2x2' to each side of the equation.
3x + 2x2 + -2x2 = -3 + -5x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
3x + 0 = -3 + -5x + 2x2 + -2x2
3x = -3 + -5x + 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
3x = -3 + -5x + 0
3x = -3 + -5x

Solving
3x = -3 + -5x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '5x' to each side of the equation.
3x + 5x = -3 + -5x + 5x

Combine like terms: 3x + 5x = 8x
8x = -3 + -5x + 5x

Combine like terms: -5x + 5x = 0
8x = -3 + 0
8x = -3

Divide each side by '8'.
x = -0.375

Simplifying
x = -0.375

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