exam Maths Puzzle Numerical Ability

Can someone help me with this question please: Simplify the complex rational expression 3x/x-4 +1 / 15/x^2-16 + 1

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exam Other Question

Determine the type of number(s) that the solutions of x^2-2x+5=0 will be:

a) one real
b) two real
c) two non-real
d) no solution Simplify the followin: 4(2a-b)-3(a-2b)

This is what I have: 5a+2b is this right?

Thanks, Lackinmath