Gujarat BoardEnglish MediumSTD 8MATHSExponents and Powers1 Mark
Question
By multiplying $(10)^5$ by $(10)^{-10}$ we get ________.
✓
Answer
By multiplying $(10)^5$ by $(10)^{-10}$ we get $(10)^{-5}$. Solution:
Using law of exponents, $(a)^m× (a)^n= (a)^{m+n}$ [$\because$ a is non-zero integer]
Similarly,
$(10)^5× (10)^{-10}+ (10)^{5-10}$
$= (10)^{-5}$
Hence, $(10)^5× (10)^{-10}=(10)^{-5}$
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