Help ASAP Square Roots, sorry might be hard to read, don't understand latex that much

Sorry, this is very difficult to read. When you copy your problem in, and for the blank spaces where latex goes, please just type in the letter/character.

Simplify the following:
sqrt(sqrt(56) sqrt(126))

sqrt(126) = sqrt(9×14) = sqrt(3^2×14):
sqrt(sqrt(56) sqrt(3^2 14))

sqrt(3^2 14) = sqrt(3^2) sqrt(14) = 3^(2/2) sqrt(14) = 3 sqrt(14):
sqrt(sqrt(56)×3 sqrt(14))

sqrt(56) = sqrt(8×7) = sqrt(2^3×7):
sqrt(sqrt(2^3 7) 3 sqrt(14))

sqrt(2^3 7) = sqrt(2^3) sqrt(7) = 2 sqrt(2) sqrt(7):
sqrt(2 sqrt(2) sqrt(7)×3 sqrt(14))

sqrt(2) sqrt(7) = sqrt(2×7):
sqrt(2 sqrt(2×7) 3 sqrt(14))

2×7 = 14:
sqrt(2 sqrt(14)×3 sqrt(14))

2 sqrt(14)×3 sqrt(14) = 2×14×3:
sqrt(2×14×3)

2×14 = 28:
sqrt(28×3)

28×3 = 84:
sqrt(84)

sqrt(84) = sqrt(4×21) = sqrt(2^2×21):
sqrt(2^2 21)

sqrt(2^2 21) = sqrt(2^2) sqrt(21) = 2^(2/2) sqrt(21) = 2 sqrt(21): 

2 sqrt(21)