(8y^3+27)/(2xy-10y+3x-15) I don't know how to solve this one.
your text should have a rule for the sum of cubes (A^3 + B^3) = (A+B)(A^2 - AB + b^2) so the top factors to (2y+3)(4y^2 - 6y + 9) the bottom factors by grouping to (x-5)(2y+3) so after you cancel you would have (x-5)/(4y^2 - 6y + 9)
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