((6+a)2)+a=-3

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Solution for ((6+a)2)+a=-3 equation: 



((6+a)2)+a=-3

We move all terms to the left:

((6+a)2)+a-(-3)=0

We add all the numbers together, and all the variables

((a+6)2)+a-(-3)=0

We add all the numbers together, and all the variables

a+((a+6)2)+3=0



We calculate terms in parentheses: +((a+6)2), so:

(a+6)2

We multiply parentheses

2a+12

Back to the equation:

+(2a+12)



We get rid of parentheses

a+2a+12+3=0

We add all the numbers together, and all the variables

3a+15=0

We move all terms containing a to the left, all other terms to the right

3a=-15

a=-15/3

a=-5

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