book Maths Puzzle Numerical Ability

The point (1,2) has the distance from the line defined by

{{{y=-(x/3+1)

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book Other Question

How can I get my calculator to do a root of a number other than the just the square root. for example, the cube root of 8 is 2. My calculator only shows the square root. I have a T-89 titanium.

Thanks in advance.
The sum of a number and 4 times its reciprocal is 25 over 6...


equation is: X+4(1/X)+25/6... but how do I solve this?

Thank you!