exam Maths Puzzle Numerical Ability

Can a radical and a whole number be multipied? For example:

radical 3 times 2.

How about Radical 3 X radical 3 + 2? thanks

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exam Other Question

Problem:
Write the equation of the line with the given slope and y-intercept. then graph the line using the slope and y-intercept
Slope: -2; y-intercept: (0, 4)

You must show a graph to earn credit for this question. 76. (x^3-1)/(x^2+1) divided by (9x^2+9x+9)/(x^2-x)

I do not know where to start on this problem let alone how to do it.