Question

# (x + 2) is a factor of x4 - 16.True False

Solution

## The correct option is A True x4 - 16 = (x2 - 4) (x2 + 4)........... [using a2−b2 = (a + b)(a - b)] (x2 - 4) is further factorable using the same formula. So we get, (x2 - 4) = (x + 2)(x - 2) This shows that, (x + 2) is a factor of x4 - 16

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