# Express the Following Rational Numbers with a Positive Exponent: 4 3 × 4 − 9 - Mathematics

Short Note
Sum

Express the following rational numbers with a positive exponent:

$4^3 \times 4^{- 9}$

#### Solution

$4^3 \times 4^{- 9}$
$= 4^\left( 3 - 9 \right) = 4^{- 6}$
$= \left( \frac{1}{4} \right)^6$ → (am x an = am+n)

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#### APPEARS IN

RD Sharma Class 8 Maths
Chapter 2 Powers
Exercise 2.2 | Q 6.3 | Page 19