=(2x+1)(4x+3)

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Solution for =(2x+1)(4x+3) equation:


Simplifying
0 = (2x + 1)(4x + 3)

Reorder the terms:
0 = (1 + 2x)(4x + 3)

Reorder the terms:
0 = (1 + 2x)(3 + 4x)

Multiply (1 + 2x) * (3 + 4x)
0 = (1(3 + 4x) + 2x * (3 + 4x))
0 = ((3 * 1 + 4x * 1) + 2x * (3 + 4x))
0 = ((3 + 4x) + 2x * (3 + 4x))
0 = (3 + 4x + (3 * 2x + 4x * 2x))
0 = (3 + 4x + (6x + 8x2))

Combine like terms: 4x + 6x = 10x
0 = (3 + 10x + 8x2)

Solving
0 = 3 + 10x + 8x2

Solving for variable 'x'.

Combine like terms: 0 + -3 = -3
-3 + -10x + -8x2 = 3 + 10x + 8x2 + -3 + -10x + -8x2

Reorder the terms:
-3 + -10x + -8x2 = 3 + -3 + 10x + -10x + 8x2 + -8x2

Combine like terms: 3 + -3 = 0
-3 + -10x + -8x2 = 0 + 10x + -10x + 8x2 + -8x2
-3 + -10x + -8x2 = 10x + -10x + 8x2 + -8x2

Combine like terms: 10x + -10x = 0
-3 + -10x + -8x2 = 0 + 8x2 + -8x2
-3 + -10x + -8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
-3 + -10x + -8x2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(3 + 10x + 8x2) = 0

Factor a trinomial.
-1((3 + 4x)(1 + 2x)) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(3 + 4x)' equal to zero and attempt to solve: Simplifying 3 + 4x = 0 Solving 3 + 4x = 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 + 4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 4x = 0 + -3 4x = 0 + -3 Combine like terms: 0 + -3 = -3 4x = -3 Divide each side by '4'. x = -0.75 Simplifying x = -0.75

Subproblem 2

Set the factor '(1 + 2x)' equal to zero and attempt to solve: Simplifying 1 + 2x = 0 Solving 1 + 2x = 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 + 2x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 2x = 0 + -1 2x = 0 + -1 Combine like terms: 0 + -1 = -1 2x = -1 Divide each side by '2'. x = -0.5 Simplifying x = -0.5

Solution

x = {-0.75, -0.5}

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