300r^2-420r+147=0

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Solution for 300r^2-420r+147=0 equation:


Simplifying
300r2 + -420r + 147 = 0

Reorder the terms:
147 + -420r + 300r2 = 0

Solving
147 + -420r + 300r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '3'.
3(49 + -140r + 100r2) = 0

Factor a trinomial.
3((7 + -10r)(7 + -10r)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(7 + -10r)' equal to zero and attempt to solve: Simplifying 7 + -10r = 0 Solving 7 + -10r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -10r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -10r = 0 + -7 -10r = 0 + -7 Combine like terms: 0 + -7 = -7 -10r = -7 Divide each side by '-10'. r = 0.7 Simplifying r = 0.7

Subproblem 2

Set the factor '(7 + -10r)' equal to zero and attempt to solve: Simplifying 7 + -10r = 0 Solving 7 + -10r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -10r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -10r = 0 + -7 -10r = 0 + -7 Combine like terms: 0 + -7 = -7 -10r = -7 Divide each side by '-10'. r = 0.7 Simplifying r = 0.7

Solution

r = {0.7, 0.7}

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