Question

for class 7 math exponents and power

Answer 1

Answer:

1) a^m*n = a^mn

(3^4)^3= 3^12

2) a^m *a^n= a^m+n

5^2*5^99= 5^101

Answer 2

QUESTION-:

Use law of exponent simplify the following-:

i) (3⁴)³

ii)5²×5⁹⁹

EXPLANATION-:

In the given question we will use two law of exponent ,i.e.

$\longrightarrow$(aᵇ)ⁿ=aᵇⁿ

$\longrightarrow$(mᵃ×mᵇ)=mᵃ⁺ᵇ

Using the law-:

i)  (3)⁴ˣ³

⇒ (3)¹²

ii) 5⁽²⁺⁹⁹⁾

⇒(5)¹⁰¹