exam Maths Puzzle Numerical Ability

Multiply

(2r - 3s)(4r^2 + 6rs + 9s^2)

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exam Other Question

what does 3x=

- Changed by SCOTT CAMPBELL - "What do you need to work out exactly?"
This is a question that I had to redo 2! I don't know what I am doing wrong.
The question is: Draw a bar qraph illustrating the following data. The data is Educational attainment