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2y² - 5y + 2 = 2y + 8 + 3
pindah ruas
2y² - 5y + 2 - 2y - 8 - 3 = 0
2y² - 7y - 9 = 0
(y+1)(2y - 9) = 0
y = -1
y = 4 1/2