exam Maths Puzzle Numerical Ability

Can you help me with factoring polynomials? This does not come from a book it comes from a teacher generated worksheet, thanks.

12x^2-25xy+12y^2

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exam Other Question

I am trying to review for a final and would like to get help with A &B:

a. y= (10^x-10^-x)/ (2)
b. y= (e^x +e^-x) / (2) There were 600 people at a play. The admission price was $3.00 for adults and $1.00 for children. The admission receipts were $1100. How many adults and children attended?