(3x+15)2=(X-3)4

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Solution for (3x+15)2=(X-3)4 equation: 



(3x+15)2=(x-3)4

We move all terms to the left:

(3x+15)2-((x-3)4)=0

We multiply parentheses

6x-((x-3)4)+30=0



We calculate terms in parentheses: -((x-3)4), so:

(x-3)4

We multiply parentheses

4x-12

Back to the equation:

-(4x-12)



We get rid of parentheses

6x-4x+12+30=0

We add all the numbers together, and all the variables

2x+42=0

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

2x=-42

x=-42/2

x=-21

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