4^3√32-3^3√108+^3√256
21
6
2a+5
2b
No
?
21
6
2a+5
2b
6xsquared minus 26x minus 5 over 3xsquared minus 15x
3a - 2b
plus or minus. You see it often with square roots. The square root of 9 is plus or minus 3.
No
No, it becomes a plus, since minus x minus = plus
(x - 7) is.
2a+6b