0a^2-a^2=-4

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Solution for 0a^2-a^2=-4 equation:


Simplifying
0a2 + -1a2 = -4

Anything times zero is zero.
0a2 + -1a2 = -4
Remove the zero:
-1a2 = -4

Solving
-1a2 = -4

Solving for variable 'a'.

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

Divide each side by '-1'.
a2 = 4

Simplifying
a2 = 4

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

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