84c^2-34cr-30r^2=

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Solution for 84c^2-34cr-30r^2= equation:


Simplifying
84c2 + -34cr + -30r2 = 0

Reorder the terms:
-34cr + 84c2 + -30r2 = 0

Solving
-34cr + 84c2 + -30r2 = 0

Solving for variable 'c'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-17cr + 42c2 + -15r2) = 0

Factor a trinomial.
2((6c + -5r)(7c + 3r)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(6c + -5r)' equal to zero and attempt to solve: Simplifying 6c + -5r = 0 Solving 6c + -5r = 0 Move all terms containing c to the left, all other terms to the right. Add '5r' to each side of the equation. 6c + -5r + 5r = 0 + 5r Combine like terms: -5r + 5r = 0 6c + 0 = 0 + 5r 6c = 0 + 5r Remove the zero: 6c = 5r Divide each side by '6'. c = 0.8333333333r Simplifying c = 0.8333333333r

Subproblem 2

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

Solution

c = {0.8333333333r, -0.4285714286r}

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