Simplify: square root of 54 x to the power of 5 y to the power of 4 z end root

Martha is making fresh yogurt with a new sample containing 200,000 healthy, probiotic bacteria at the start (At t = 0). After putting the sample into her yogurt maker, she records the total number of probiotic bacteria f(t) in the sample as it grows exponentially each hour (t). =-= 30 Points =-=