X^-9*x^-2
a 1/x^18
b 1/x^11
c x^18
d x^11
1 answer:
Exponent rule : a^-x = 1/a^x
x^-9 * x^-2 =
1/x^9 * 1/x^2 = (when multiplying exponents with same base, add exponents)
1/x^(9 + 2) =
1/x^11
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