ML Aggarwal CBSE Solutions Class 7 Math 4th Chapter Exponents and Powers Exercise 4.2
(1) Using laws of exponents, simplify and write the following in the exponential form:
(i) 27 x 24
(ii) p5 x p3
(iii) (-7)5 x (-7)11
(iv) (3/5)6 (3/5)2
(v) (-6)7 ÷ (-6)3
(vi) 7x x 73
(2) Simplify and write the following in the exponential form:
(i) 53 x 57 x 512
(ii) a5 x a3 x a7
(iii) (712 x 73) ÷ 74
(3) Simplify and write the following in the exponential form:
(i) (22)100
(ii) ((-7)6)5
(iii) (32)5 x (34)7
Solution: 
(4) Simplify and write in the exponential form:
(i) a3 x a5 / (a3)2
(ii) (23)4 ÷ 25
(iii) [(62)3 ÷ 63] ÷ 65
(5) Simplify and write the exponential form:
(i) 54 x 84
(ii) (-3)6 x (-5)6
(iii) (3/10)5 x (2/15)5
Solution: 
(12) Express each of the following as a product of prime factors in the exponential form:
(i) 108 x 192
(ii) 729 x 64
(iv) 384 x 147
Solution: 
(13) Simplify and write the following in exponential form
(i) 33 x 22 + 22 x 50
(ii) 92 + 112 – 22 x 3 x 170
(14) (i) By what number should we multiply 34 so that the product is 37?
(ii) By what number should we multiply (-6)-1 so that the product is 10-1
Solution: 
(15) Solution:
simplify each of the following express the answer in exponential form.
(4^(2)×16)^(4)
solve this question please
16 x 65,536
= 10,48,576