4x(x+4)+3=x(5-2x)

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


Simplifying
4x(x + 4) + 3 = x(5 + -2x)

Reorder the terms:
4x(4 + x) + 3 = x(5 + -2x)
(4 * 4x + x * 4x) + 3 = x(5 + -2x)
(16x + 4x2) + 3 = x(5 + -2x)

Reorder the terms:
3 + 16x + 4x2 = x(5 + -2x)
3 + 16x + 4x2 = (5 * x + -2x * x)
3 + 16x + 4x2 = (5x + -2x2)

Solving
3 + 16x + 4x2 = 5x + -2x2

Solving for variable 'x'.

Reorder the terms:
3 + 16x + -5x + 4x2 + 2x2 = 5x + -2x2 + -5x + 2x2

Combine like terms: 16x + -5x = 11x
3 + 11x + 4x2 + 2x2 = 5x + -2x2 + -5x + 2x2

Combine like terms: 4x2 + 2x2 = 6x2
3 + 11x + 6x2 = 5x + -2x2 + -5x + 2x2

Reorder the terms:
3 + 11x + 6x2 = 5x + -5x + -2x2 + 2x2

Combine like terms: 5x + -5x = 0
3 + 11x + 6x2 = 0 + -2x2 + 2x2
3 + 11x + 6x2 = -2x2 + 2x2

Combine like terms: -2x2 + 2x2 = 0
3 + 11x + 6x2 = 0

Factor a trinomial.
(3 + 2x)(1 + 3x) = 0

Subproblem 1

Set the factor '(3 + 2x)' equal to zero and attempt to solve: Simplifying 3 + 2x = 0 Solving 3 + 2x = 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 + 2x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 2x = 0 + -3 2x = 0 + -3 Combine like terms: 0 + -3 = -3 2x = -3 Divide each side by '2'. x = -1.5 Simplifying x = -1.5

Subproblem 2

Set the factor '(1 + 3x)' equal to zero and attempt to solve: Simplifying 1 + 3x = 0 Solving 1 + 3x = 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 + 3x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3x = 0 + -1 3x = 0 + -1 Combine like terms: 0 + -1 = -1 3x = -1 Divide each side by '3'. x = -0.3333333333 Simplifying x = -0.3333333333

Solution

x = {-1.5, -0.3333333333}

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