exam Maths Puzzle Numerical Ability

how do i multiply?
8x^3-6x^2+2x
over
4x+1

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exam Other Question

Lynn and Laws knew that the confection should be exactly 8% sugar. It was to be made using one component that was 5% sugar and another that was 20% sugar. How much of each should they use to get 800 ml of the confection? Please help me with this problem.
Find an expression that completes the identity.
(2sin^2(x)+cos2(x))/(sec(x)) = ??