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2. (3p-3)(3p-3) = 9p(pangkat2) - 9p - 9p + 9 = 9p(pangkat2) - 18p + 9
3. (4k-5)(4k-5) = 16k(pangkat2) - 20k - 20k + 25 = 16k(pangkat2) - 40k + 25
Maaf kalau salah.
= 4y²+6y+6y+9
= 4y²+12y+9
(3p-3)²= (3p-3)(3p-3)
= 9p²-9p-9p+9
= 9p²-18p+9
(4k-5)²= (4k-5)(4k-5)
= 16k²-20k-20k+25
= 16k²-40k+25