a^2-2a-a^2=-9+1

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Solution for a^2-2a-a^2=-9+1 equation: 


Simplifying
a2 + -2a + -1a2 = -9 + 1

Reorder the terms:
-2a + a2 + -1a2 = -9 + 1

Combine like terms: a2 + -1a2 = 0
-2a + 0 = -9 + 1
-2a = -9 + 1

Combine like terms: -9 + 1 = -8
-2a = -8

Solving
-2a = -8

Solving for variable 'a'.

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

Divide each side by '-2'.
a = 4

Simplifying
a = 4

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