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4l^2+4l-3=(2l-1)(2l+3)
We move all terms to the left:
4l^2+4l-3-((2l-1)(2l+3))=0
We multiply parentheses ..
4l^2-((+4l^2+6l-2l-3))+4l-3=0
We calculate terms in parentheses: -((+4l^2+6l-2l-3)), so:We add all the numbers together, and all the variables
(+4l^2+6l-2l-3)
We get rid of parentheses
4l^2+6l-2l-3
We add all the numbers together, and all the variables
4l^2+4l-3
Back to the equation:
-(4l^2+4l-3)
4l^2+4l-(4l^2+4l-3)-3=0
We get rid of parentheses
4l^2-4l^2+4l-4l+3-3=0
We add all the numbers together, and all the variables
=0
l=0/1
l=0
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