exam Maths Puzzle Numerical Ability

(3x^2+2x-5/5x+1)+(2x^2-x+6/5x+1)

I have no idea how to do this problem
Key ^=exponents /=all over or fraction

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factor each expression:

8-m^6 a rectangular box is to be used to store materials. The inside of the box is 12.0 in. long, 9.50 in. wide, and 8.75 in. deep. What is the area of sheet lead that must be used to line the inside of the box?