(3c+4)(7c-2)=

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


Simplifying
(3c + 4)(7c + -2) = 0

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

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

Multiply (4 + 3c) * (-2 + 7c)
(4(-2 + 7c) + 3c * (-2 + 7c)) = 0
((-2 * 4 + 7c * 4) + 3c * (-2 + 7c)) = 0
((-8 + 28c) + 3c * (-2 + 7c)) = 0
(-8 + 28c + (-2 * 3c + 7c * 3c)) = 0
(-8 + 28c + (-6c + 21c2)) = 0

Combine like terms: 28c + -6c = 22c
(-8 + 22c + 21c2) = 0

Solving
-8 + 22c + 21c2 = 0

Solving for variable 'c'.

Factor a trinomial.
(-4 + -3c)(2 + -7c) = 0

Subproblem 1

Set the factor '(-4 + -3c)' equal to zero and attempt to solve: Simplifying -4 + -3c = 0 Solving -4 + -3c = 0 Move all terms containing c to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -3c = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -3c = 0 + 4 -3c = 0 + 4 Combine like terms: 0 + 4 = 4 -3c = 4 Divide each side by '-3'. c = -1.333333333 Simplifying c = -1.333333333

Subproblem 2

Set the factor '(2 + -7c)' equal to zero and attempt to solve: Simplifying 2 + -7c = 0 Solving 2 + -7c = 0 Move all terms containing c to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -7c = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -7c = 0 + -2 -7c = 0 + -2 Combine like terms: 0 + -2 = -2 -7c = -2 Divide each side by '-7'. c = 0.2857142857 Simplifying c = 0.2857142857

Solution

c = {-1.333333333, 0.2857142857}

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