If the outside number is a power of 2, that says write the brackets out twice
(x^2y^3x^4)(x^2y^3x^4)
now since the bases are the same add up the powers.
x^(2+2)Y^(3+3) etc
= x^4y^6 etc...
Simplify the expression where possible.
(x 2y 3z 4) 2
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