-9a(-5a)=

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Solution for -9a(-5a)= equation: 


Simplifying
-9a(-5a) = 0

Remove parenthesis around (-5a)
-9a * -5a = 0

Reorder the terms for easier multiplication:
-9 * -5a * a = 0

Multiply -9 * -5
45a * a = 0

Multiply a * a
45a2 = 0

Solving
45a2 = 0

Solving for variable 'a'.

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

Divide each side by '45'.
a2 = 0

Simplifying
a2 = 0

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

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