Question

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Answer 1

Answer:

5 solution:- Rewrite the expression using the (-ve) exponent rule

b^-n=1/b^n

1/3^2

Raise 3 to the power of 2

1/9

The result can be shown as in multiple forms

Exact form

1/9

Decimal form

0.111...

7. solution:- (a)1/8

(b) 61^5

(c) 64

(d) -2^-7

6. solution:- (a)=a^m+n

(b)a^m-n

(c)1

(d)1/a^m

(e)a^mn

(f) (a/b)^n

4. solution:- column A column B

(a)7^-1 (i) 1

(b)7^0 (ii) 1/7

(c)7^1 (iii) 7

(d) (7^2)^1 (iv) 7^2

answer:- (a) (ii)

(b) (i)

(c) (iii)

(d) (iv)

3.solution:- (i) = (-3-4-5)^0

= 1

(ii) =(2×-7)^-3

= (-14)^-3