exam Maths Puzzle Numerical Ability

add and express in simplest form

3y
over
y^2+5y+4
plus
2y
over
Y^2-1

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exam Other Question

Twice the middle digit of a three-digit number is the sum of the other two. If the number is divided by the sum of its digit, the answer is 56 and the remainder is 12. If the digit Solve: -x^4+200=102x^2.