exam Maths Puzzle Numerical Ability

Simplify and state any restrictions on varibles
x2-16
-----
x2+3x-4

the x with the 2 beside it is squared

thank you

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exam Other Question

v=1/3 3.14 times r times r times h (solve for 3.14, r, h,) if five times the smaller of two consecutive integers is added to three times the larger, the result is 59. find the integer