Question

SOMEONE SMART 15 POINTS
simplifying radical expressions (subtraction)

Answer 1

Subtract first from second and get

-3 and the same little 3, square root, and 2b. So just change the first number to -3.

Answer 2

when the radical terms are the same, just focus on the numbers that are in front of them so it's really just 6 - 9 and you get -3 (third root of 2b)