Since 11 appears 4 times as a factor, you need to raise 11 to the power 4.
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The exponents are added.
You can have negative exponents anywhere. When they are in the denominator, they are equivalent to positive exponents in the numerator of a fraction.
You add the exponents- x^2*x^6=x^8
You sole exponents by multiplying the hole number by the exponent.