exam Maths Puzzle Numerical Ability

f(x)=x^2-3 How do I solve this problem I have tried several times and I do not think I have the right answer

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exam Other Question

6[5+2(3-8)-3] A map has a scale of 1 centimeter : 8 kilometers. Use the given actual distance on the map.

4 km

Any help with this equation would be Greatly</b> appreciated.No answers from Solver 91311 please:)