Answer:
y²(6x+5)/15
Step-by-step explanation:
We are to multiply the expression (7y^3/5)(6x+5/21y)
(7y^3/5)(6x+5/21y) = 7 * y * y * y/5 * 6x+5/21y
(7y^3/5)(6x+5/21y) = y²/5 * 6x+5/3
(7y^3/5)(6x+5/21y) = y²(6x+5)/5*3
(7y^3/5)(6x+5/21y) = y²(6x+5)/15
Hence the product is y²(6x+5)/15
