the perimeter of triangle is 6p square minus 4p + 9 and two of its side are p square minus 2p + 1 and 3p square minus 5 p + 3 find third side of the triangle
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perimeter oftriangle=sum of all side
(6p×6p)-4p=p×p-2p+1+3p×3p-5p+3
36p-4p=2p-2p+1+9p-5p+3
32p=p+1+4p+3
32p=4+5p
5p-p=32+4
4p=36
p=36÷4
p=9
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