Which pair of radicals is a pair of like radicals?
a] 2√ 3 and 2√ 5
b] 5√ 6 and 6√ 5
c] 7√ 3 and 9√ 3
d] 9√ 2 and -9√ 3
a] 2√ 3 and 2√ 5
b] 5√ 6 and 6√ 5
c] 7√ 3 and 9√ 3
d] 9√ 2 and -9√ 3
