Question

Factorise fully 42x cubed + 6x

Answer 1

Decrease 3680 by 15%

Answer 2

First, we can factor out the greatest common factor 6x:

42x^3 + 6x = 6x(7x^2 + 1)

This expression is already fully factorised as (7x^2 + 1) cannot be factorised any further.

Answer 3

To decrease 3680 by 15%, we need to find 15% of 3680 and then subtract it from 3680.

15% of 3680 can be calculated as:

(15/100) x 3680 = 552

So, to decrease 3680 by 15%, we need to subtract 552 from it:

3680 - 552 = 3128

Therefore, the answer is 3128.