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5^+10.5+16=
25+50+16= 81
kemungkinan
panjang=27cm
lebar=3cm
= x²+8x+2x+16
= x(x+8)+2(x+8)
= (x+2)(x+8)
Lp = p x l
= (x+2)(x+8)
= (5+2)(5+8)
= 7 x 13
p = 7
l = 13
atau
l = 13
p = 7