1) Simplify : (2/3)

(2/3)

As the exponents are negative first make it positive

= (3/2)

Separate the exponents

= 3

= (3

= [ 3

= (3 x 2

= 3 x 2

= 3 x 2

= 6

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2) 4

4

As the bases are same and there is a division so subtract the 2nd exponent from the 1st.

4

4

4

As the bases are same, exponents are equal.

9 = 2n - 1

9 + 1 = 2n

10 = 2n

So, n = 10/2

n = 5

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3) n(-5)

n(-5)

n

n

n

As the exponent of 'n' is negative, make it positive.

(-5)

(-5)

(-5)

[(-5)x (-5) x (-5) x (-5)]/5 = n

625/5 = n

n = 125

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