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Verified answer
A(x) - B(x + 1) = 0A(x) = B(x + 1)
yang dikurung dkrg 2 smua
A(x - 2) = B(x + 1 - 2)
A(x - 2) = B(x - 1)
B(x - 1) = 2(x - 2) - (x - 2)²
= 2x - 4 - (x² - 4x + 4)
= 2x - 4 - x² + 4x - 4
= -x² + 6x - 8