Algebramedium · Past Paper

What is the HCF of (x^2 - 4) and (x^2 - 5x + 6)?

A(x-2)
B(x+2)
C(x-3)
D(x+2)(x-3)

✓ Correct Answer: A(x-2)

x^2-4 = (x-2)(x+2) and x^2-5x+6 = (x-2)(x-3). The common factor is (x-2).

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