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Verified answer
Luas persegi panjang=panjang x lebarPanjang= luas:lebar
(2x²+7x+3):(2x+1)=x+3
A. x+3
B. Keliling=2(panjang + lebar)
2(x+3+2x+1)=2(3x+4)=6x+8
Semoga membantu...
Luas = panjang × (2x+1)
p = bagi luasnya dengan lebarnya = (x+3)
k= 6x+8