(3x-2)(4x+7)-(2x+1)(4x+7)=

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Solution for (3x-2)(4x+7)-(2x+1)(4x+7)= equation:


Simplifying
(3x + -2)(4x + 7) + -1(2x + 1)(4x + 7) = 0

Reorder the terms:
(-2 + 3x)(4x + 7) + -1(2x + 1)(4x + 7) = 0

Reorder the terms:
(-2 + 3x)(7 + 4x) + -1(2x + 1)(4x + 7) = 0

Multiply (-2 + 3x) * (7 + 4x)
(-2(7 + 4x) + 3x * (7 + 4x)) + -1(2x + 1)(4x + 7) = 0
((7 * -2 + 4x * -2) + 3x * (7 + 4x)) + -1(2x + 1)(4x + 7) = 0
((-14 + -8x) + 3x * (7 + 4x)) + -1(2x + 1)(4x + 7) = 0
(-14 + -8x + (7 * 3x + 4x * 3x)) + -1(2x + 1)(4x + 7) = 0
(-14 + -8x + (21x + 12x2)) + -1(2x + 1)(4x + 7) = 0

Combine like terms: -8x + 21x = 13x
(-14 + 13x + 12x2) + -1(2x + 1)(4x + 7) = 0

Reorder the terms:
-14 + 13x + 12x2 + -1(1 + 2x)(4x + 7) = 0

Reorder the terms:
-14 + 13x + 12x2 + -1(1 + 2x)(7 + 4x) = 0

Multiply (1 + 2x) * (7 + 4x)
-14 + 13x + 12x2 + -1(1(7 + 4x) + 2x * (7 + 4x)) = 0
-14 + 13x + 12x2 + -1((7 * 1 + 4x * 1) + 2x * (7 + 4x)) = 0
-14 + 13x + 12x2 + -1((7 + 4x) + 2x * (7 + 4x)) = 0
-14 + 13x + 12x2 + -1(7 + 4x + (7 * 2x + 4x * 2x)) = 0
-14 + 13x + 12x2 + -1(7 + 4x + (14x + 8x2)) = 0

Combine like terms: 4x + 14x = 18x
-14 + 13x + 12x2 + -1(7 + 18x + 8x2) = 0
-14 + 13x + 12x2 + (7 * -1 + 18x * -1 + 8x2 * -1) = 0
-14 + 13x + 12x2 + (-7 + -18x + -8x2) = 0

Reorder the terms:
-14 + -7 + 13x + -18x + 12x2 + -8x2 = 0

Combine like terms: -14 + -7 = -21
-21 + 13x + -18x + 12x2 + -8x2 = 0

Combine like terms: 13x + -18x = -5x
-21 + -5x + 12x2 + -8x2 = 0

Combine like terms: 12x2 + -8x2 = 4x2
-21 + -5x + 4x2 = 0

Solving
-21 + -5x + 4x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -4x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -4x)' equal to zero and attempt to solve: Simplifying -7 + -4x = 0 Solving -7 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -4x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -4x = 0 + 7 -4x = 0 + 7 Combine like terms: 0 + 7 = 7 -4x = 7 Divide each side by '-4'. x = -1.75 Simplifying x = -1.75

Subproblem 2

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

Solution

x = {-1.75, 3}

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