Simplify: 4^3 4^ -7 - Vidyadip

MCQ

Simplify: $4^3 \div 4^{-7}$

A
$4^8$
✓
$4^{10}$
C
$4^4$
D
$4^{21}$

✓

Answer

Correct option: B.

$4^{10}$

B. $4^{10}$
Solution:
$4^3 \div 4^{-7} = 4^{(3-(-7))} (a^m \div a^n = a^{m-n})$
$= (4)^{(3+7)} = 4^{10}$

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