2r^3+10r^3=28r

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Solution for 2r^3+10r^3=28r equation:


Simplifying
2r3 + 10r3 = 28r

Combine like terms: 2r3 + 10r3 = 12r3
12r3 = 28r

Solving
12r3 = 28r

Solving for variable 'r'.

Reorder the terms:
-28r + 12r3 = 28r + -28r

Combine like terms: 28r + -28r = 0
-28r + 12r3 = 0

Factor out the Greatest Common Factor (GCF), '4r'.
4r(-7 + 3r2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor 'r' equal to zero and attempt to solve: Simplifying r = 0 Solving r = 0 Move all terms containing r to the left, all other terms to the right. Simplifying r = 0

Subproblem 2

Set the factor '(-7 + 3r2)' equal to zero and attempt to solve: Simplifying -7 + 3r2 = 0 Solving -7 + 3r2 = 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 + 3r2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + 3r2 = 0 + 7 3r2 = 0 + 7 Combine like terms: 0 + 7 = 7 3r2 = 7 Divide each side by '3'. r2 = 2.333333333 Simplifying r2 = 2.333333333 Take the square root of each side: r = {-1.527525232, 1.527525232}

Solution

r = {0, -1.527525232, 1.527525232}

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