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3p(p+2) = p(p-4)
3p + 6 = p - 4
2p = -10
p = -5
2. C
y² - 3y = 0
y(y - 3) = 0
y = 0 atau y = 3
3. D
16x² - 9 = 0
(4x - 3)(4x + 3)
4. B
4(x+1)(x+1) - 49 = 0
4 (x² + 2x + 1) - 49 = 0
4x² + 8x + 4 - 49 = 0
4x² + 8x - 45 = 0
(2x - 5)(2x + 9) = 0