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(2x+5)2=28
We move all terms to the left:
(2x+5)2-(28)=0
We multiply parentheses
4x+10-28=0
We add all the numbers together, and all the variables
4x-18=0
We move all terms containing x to the left, all other terms to the right
4x=18
x=18/4
x=4+1/2
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