book Maths Puzzle Numerical Ability

How do I solve this equation using the quadratic formula

3-4/x-2/x2=0

THREE - FOUR OVER X - TWO OVER X SQUARED = ZERO

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book Other Question
add and simplify

y over y^2-49 + 7 over y^2+8y+7

please show work On what type of surface can you have a triangle whose angles add to 270 degrees?