please help me im gona get grounded if this aint done in 30 mins

6 square root of 7 times 3 square root of 5

square root of M square root of M squared

suare root of M squared over N cubed

3 square root of 2 + the square root of 50

(suare root of 2-3) (sguare root of 2+3

(suare root of 3 - square root of 5) (square root of 3 - square root of 5)

square root of x

to the 4th square root of 2

cubed square root of x squared y cubed

please help me or im screwed thank u please help!!