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Margaret [11]
3 years ago
9

Divide p^-4q^5r^6/p^-3qr^-2

Mathematics
1 answer:
Fed [463]3 years ago
5 0

we are given

\frac{p^{-4}q^5r^6}{p^{-3}qr^{-2}}

step-1:

\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}\:=\:\frac{1}{x^{b-a}}

\frac{p^{-4}}{p^{-3}}=\frac{1}{p^{-3-\left(-4\right)}}=\frac{1}{p}

=\frac{q^5r^6}{pqr^{-2}}

step-2:

\mathrm{Cancel\:the\:common\:factor:}\:q

=\frac{q^4r^6}{pr^{-2}}

step-3:

\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}\:=\:x^{a-b}

\frac{r^6}{r^{-2}}=r^{6-\left(-2\right)}=r^8

=\frac{q^4r^8}{p}

so, we get

\frac{p^{-4}q^5r^6}{p^{-3}qr^{-2}}=\frac{q^4r^8}{p}.............Answer

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