A few days ago

nycz_shortii

help with math questions?

how can i write each expression in an equivalent form, using positive exponents only?

8^-2

k^-6

10^-3

2x^-4

oh and especially this fraction one

(2/5)^-2

**the 2/5 is the fraction

thank you soo much!!!

i need soo much help

Top 2 Answers

A few days ago

Anonymous

Favorite Answer

x^(-n) = 1 / x^n.

So:

8^(-2) = 1 / 8^2

This rule works even when x is a fraction.

(3/7)^(-3) would be (7/3)^3.

Got the idea?

A few days ago

melissa

1/(8^2)

1/(k^6)

1/(10^3)

2/(x^4)

i think this is the anwser for the fraction but i’m not positive:

5^2/(2^2)

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