28c^2-37c-21=

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Solution for 28c^2-37c-21= equation:


Simplifying
28c2 + -37c + -21 = 0

Reorder the terms:
-21 + -37c + 28c2 = 0

Solving
-21 + -37c + 28c2 = 0

Solving for variable 'c'.

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

Subproblem 1

Set the factor '(-3 + -7c)' equal to zero and attempt to solve: Simplifying -3 + -7c = 0 Solving -3 + -7c = 0 Move all terms containing c to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -7c = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -7c = 0 + 3 -7c = 0 + 3 Combine like terms: 0 + 3 = 3 -7c = 3 Divide each side by '-7'. c = -0.4285714286 Simplifying c = -0.4285714286

Subproblem 2

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

Solution

c = {-0.4285714286, 1.75}

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