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Exponents and Powers — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSExponents and Powers1 Mark
Question
$(-3)^8 \div(-3)^5=(-3)$____.
✓

Answer

$(-3)^8 \div(-3)^5=(-3)^3$
Solution:
Here, $(-3)^8 \div(-3)^5=(-3)^{8-5}=(-3)^3\left[\because a^m+a^n=a^{m-n}, m>n\right]$
$\therefore(-3)^8 \div(-3)^5=(-3)^3$

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