-7(r^2+2)+3r^2=

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Solution for -7(r^2+2)+3r^2= equation:


Simplifying
-7(r2 + 2) + 3r2 = 0

Reorder the terms:
-7(2 + r2) + 3r2 = 0
(2 * -7 + r2 * -7) + 3r2 = 0
(-14 + -7r2) + 3r2 = 0

Combine like terms: -7r2 + 3r2 = -4r2
-14 + -4r2 = 0

Solving
-14 + -4r2 = 0

Solving for variable 'r'.

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

Add '14' to each side of the equation.
-14 + 14 + -4r2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -4r2 = 0 + 14
-4r2 = 0 + 14

Combine like terms: 0 + 14 = 14
-4r2 = 14

Divide each side by '-4'.
r2 = -3.5

Simplifying
r2 = -3.5

Reorder the terms:
3.5 + r2 = -3.5 + 3.5

Combine like terms: -3.5 + 3.5 = 0.0
3.5 + r2 = 0.0

The solution to this equation could not be determined.

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