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(=) 2(2P² - 4P) - 3(P+3P²)
(=) 4P² - 8P - 3P -9P²
(=) -5P² - 11P
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keliling = 2P + 2L
2(3x + 2) + 2(2x - 1) = 32
6x + 4 + 4x - 2= 32
10x + 2 = 32
10x = 30
x = 3
P = 3x+2
P = 3(3) + 2
P = 9+2
P = 11 cm
L = 2x-1
L = 2(3) - 1
L = 6 - 1
L = 5 cm
= 4p2-8p-3p-9p2
= -5p2-11p
2 K=2p+2l
32=2(3x+2) + 2(2x-1)
32=6x+4+4x-2
32=10x+2
30=10x
x=3