algebra
posted by marissa .
simplify
14a^8y^37a^4y^5+28a^12y^2/7a^4y

(4a^8Y^3  7a^4Y^5 + 28a^12Y^2) / 7a^4Y
14a^8Y^3 / 7a^4Y  7a^4Y^5 / 7a^4Y +
28a^12Y^2 / 7a^4Y.
Divide each numerator by 7a^4Y:
2a^4Y^2  Y^4 + 4a^8Y,
Factor out Y:
Y(2a^4Y  Y^3 + 4a^8).