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11] [9/-5]99
12] Using law of exponents, am x an = (a)m+n Similarly, xm x xn = (x)m + n
13] 1
14] Using law of exponents, = -1/x
15] Using law of exponents= -1/xm
16] As per the laws of exponent (am)n = a(m× n)
where a is non-zero integer Similarly,
(xm)n = x m× n
17] Using law of exponents= [-4/3]^3
18] [7/5]^5
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