Answer:
0
Step-by-step explanation:
3√128-2√6x4√3
= 3√2√64 - 2√6 x 4√3
= 24√2 - 2√6 x 4√3
= 24√2 - 8√18
= 24√2 - 8√2 * √9
= 24√2 - 3* 8√2
= 24√2 - 24√2
= 0
