5sqrt(19) * 6sqrt(2)

To simplify the expression, you can multiply the numbers outside the square roots and simplify the square roots separately:

5√19 * 6√2 = (5 * 6) * (√19 * √2)

= 30 * √(19 * 2)

= 30 * √(38)

Therefore, the simplified expression is 30√38.