Question

If x is a whole number, then x²(x² - 1) is always divisible by ?
A) 4
B) 8
C) 12
D) None

Answer 1

If x is a whole number, then x²(x² - 1) is always divisible by ?
A) 4
B) 8
C) 12
D) None

=>Option C

Description:

We can do this by trial and error method.

Putting x = 2,we get 2²(2² - 1) = 12.

checking with other integers, the above equation always gives a value which is a multiple of 12,

So, x²(x² - 1) is always divisible by 12.

Answer 2

Heya Mate !!!

Your Answer is ; 12.


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Step by Step Explanation ;-
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This question can be solved by using trial and error method ;-

Let's Put Y = 2
Result = 2^2 (2^2-1) = 12.

Let's check with other integers ;-
Hola , the above questions is resulting the number 12.

So , y^2 ( y^2 - 1 ) seems always divisible by 12.

Hence , 12 is the right answer.