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Simplifying
5a2 + -10 = 490
Reorder the terms:
-10 + 5a2 = 490
Solving
-10 + 5a2 = 490
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '10' to each side of the equation.
-10 + 10 + 5a2 = 490 + 10
Combine like terms: -10 + 10 = 0
0 + 5a2 = 490 + 10
5a2 = 490 + 10
Combine like terms: 490 + 10 = 500
5a2 = 500
Divide each side by '5'.
a2 = 100
Simplifying
a2 = 100
Take the square root of each side:
a = {-10, 10}
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