-2r*r=

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Solution for -2r*r= equation: 


Simplifying
-2r * r = 0

Multiply r * r
-2r2 = 0

Solving
-2r2 = 0

Solving for variable 'r'.

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

Divide each side by '-2'.
r2 = 0

Simplifying
r2 = 0

Take the square root of each side:
r = {0}

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