Math Question?

2 ⤊

1. (a^-2 / a^5) ^-1
A. a^7
B. a^3
C. a^-3
D.a^-7

2. (b^-2 / b^-5)^-2
A. 1/b^6
B. 1/b^3
C. b^1
D. b^3

2007-02-22 03:36:09 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

1 = a

2 = a

- - - - - - - - -s-

2007-02-22 07:28:23 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋

When you multiply two variables w/ powers, you add their powers together. When you divide, you subtract the power of the denominator from the power of the numerator.

When you raise a power to another power, you multiply those powers together.

1. (a^-2/a^5)^-1 = (a^-7)^-1 = a^7

2. (b^-2/b^-5)^-2 = (b^3)^-2 = b^-6 = 1/(b^6)

2007-02-22 11:41:42 · answer #2 · answered by Dave 6 · 1⤊ 0⤋

1-a
2- a

2007-02-22 11:40:26 · answer #3 · answered by Grant d 4 · 1⤊ 0⤋