(18+x)2=-30

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Solution for (18+x)2=-30 equation: 



(18+x)2=-30

We move all terms to the left:

(18+x)2-(-30)=0

We add all the numbers together, and all the variables

(x+18)2-(-30)=0

We add all the numbers together, and all the variables

(x+18)2+30=0

We multiply parentheses

2x+36+30=0

We add all the numbers together, and all the variables

2x+66=0

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

2x=-66

x=-66/2

x=-33

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