Try another version of this question Get help: Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Multiply and Simplify.
`3 sqrt(5)(7 sqrt(35)+sqrt(15))` =
Enter DNE for Does Not Exist, oo for Infinity `105 sqrt(7)+15 sqrt(3)`