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

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


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

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

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

Multiply (7 + 3x) * (-7 + 4x)
(7(-7 + 4x) + 3x * (-7 + 4x)) = 0
((-7 * 7 + 4x * 7) + 3x * (-7 + 4x)) = 0
((-49 + 28x) + 3x * (-7 + 4x)) = 0
(-49 + 28x + (-7 * 3x + 4x * 3x)) = 0
(-49 + 28x + (-21x + 12x2)) = 0

Combine like terms: 28x + -21x = 7x
(-49 + 7x + 12x2) = 0

Solving
-49 + 7x + 12x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 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 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333

Subproblem 2

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

Solution

x = {-2.333333333, 1.75}

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