=3a^2-a^2

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Solution for =3a^2-a^2 equation: 


Simplifying
0 = 3a2 + -1a2

Combine like terms: 3a2 + -1a2 = 2a2
0 = 2a2

Solving
0 = 2a2

Solving for variable 'a'.

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

Add '-2a2' to each side of the equation.
0 + -2a2 = 2a2 + -2a2
Remove the zero:
-2a2 = 2a2 + -2a2

Combine like terms: 2a2 + -2a2 = 0
-2a2 = 0

Divide each side by '-2'.
a2 = 0

Simplifying
a2 = 0

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

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