book Maths Puzzle Numerical Ability

I need your help with, Factoring Trinomials By Grouping, If the Trinomials cannot be factored write "PRIME"

3x^2-7xy+6xy-14y^2

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book Other Question

Find the probability of drawing an ace and a jack when two cards are drawn (without replacement) from a standard deck of cards x= 2y-1 and 2x+y=81

solve using substitution

x=?
y=?

show work please thank you!!