3r^2+5=17

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Solution for 3r^2+5=17 equation: 


Simplifying
3r2 + 5 = 17

Reorder the terms:
5 + 3r2 = 17

Solving
5 + 3r2 = 17

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-5' to each side of the equation.
5 + -5 + 3r2 = 17 + -5

Combine like terms: 5 + -5 = 0
0 + 3r2 = 17 + -5
3r2 = 17 + -5

Combine like terms: 17 + -5 = 12
3r2 = 12

Divide each side by '3'.
r2 = 4

Simplifying
r2 = 4

Take the square root of each side:
r = {-2, 2}

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