book Maths Puzzle Numerical Ability

Please help me rationalize the expression 2sqrt3+sqrt2/sqrt3-sqrt2 so there are no radicals in the denominator. I came up with 4-sqrt6
Thanks a lot

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book Other Question

GRAPH THE FOLLOWING INEQUALITY 4X + Y> 4
- How many pounds of chocolates costing $4.60 per pound may be mixed with 6 lb of chocolates costing $5 per pound to produce a mixture that can be sold for $4.90 per pound?