🎴 Flashcard Mode
Negative Exponents and Indices - Class VIII
Card1 / 20
Mastered0
Review0
QuestionClick to flip
$5^{-2}$ can also be expressed as
AnswerClick to flip back
A
$\dfrac{1}{25}$
💡 Explanation:
$5^{-2}=5^{-1*2}$
$=(5^2)^{-1}$ $\because (a)^{mn}=(a^m)^n$
$=\dfrac{1}{5^2}$ $\because a^{-n}=\dfrac{1}{a^n}$
$=\dfrac{1}{25}$