Question

x2 -1 is divisible by 8 if x is (a) an integer (b) a natural number (c) an odd number (d) an even number

Answer 1

Answer:

X^2-1is divisible by 8 if X is An Integer

Answer 2

Answer:

( a ) An integer

Step-by-step explanation:

( a ) An integer Is the correct answer of this question .

x 2 - 1 is divisible by 8 if x is an integer

Therefore, x2–1 is divisible by 8 if n is an odd positive integer.

4Q² + 4Q = 4(2)² + 4(2) =16 + 8 = 24, it is also divisible by 8 . It is concluded that 4Q² + 4Q is divisible by 8 for all natural numbers. Hence, x² -1 is divisible by 8 for all odd values of n.

An integer, pronounced "IN-tuh-jer," is a whole number that can be positive, negative, or zero and is not a fraction. Integer examples include: -5, 1, 5, 8, 97, and 3,043. The following numbers are examples of non-integer numbers: -1.43, 1 3/4, 3.14,.09, and 5,643.1.

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