Question

a rectangle has an area of 18cm2 the lenght of the sides are whole numbers how long could the sides of the rectangle be give all the exsamples you can thinck of

Answer 1

The sides will be the multiple of factors of 18
like
9x2
6x3 etc.

Answer 2

The most difficult part of combining functions is understanding the notation. What does (f\cdot g)(x)(f⋅g)(x) mean?

Well, (f\cdot g)(x)(f⋅g)(x) just means to find the product of f(x)f(x) and g(x)g(x). Mathematically, this means that (f\cdot g)(x)=f(x)\cdot g(x)(f⋅g)(x)=f(x)⋅g(x).

Now, this becomes a familiar problem