2006-09-17 07:26:23 · 4 answers · asked by Chelsey 5 in Education & Reference ➔ Homework Help
Please show your work
2006-09-17 07:31:29 · update #1
12
2006-09-17 07:29:05 · answer #1 · answered by Phlodgeybodge 5 · 0⤊ 0⤋
Please excuse my dear Aunt Sally.
PEMDAS
Parentheses, exponentiation, multiplication and division, addition and subtraction.
That's the order to work out operations.
-3^-2-2/-2^-3-2^0
There are no parentheses, so the exponents first
(-3)^(-2) = 1/(-3)x1/(-3)=1/9
(-2)^(-3) = 1(-2)x1(-2)x1(-2) = -1/8
2^0 = 1
Every negative sign there is there because it followed a higher operator, execept the first which had no preceding operand.
Now we have (1/9)-2/(-1/8)-1 and after performing the division (there is no multiplicaton) operation, we have
(1/9)-(-16)-1 ----- since 2/(-1/8)=-16
There is no addition, but subtracting a negative is the same as adding a positive, so
(1/9)-(-16)-1 = (1/9) + 16 - 1 = 16 - 1 + (1/9) = 15 1/9
2006-09-17 14:53:40 · answer #2 · answered by novangelis 7 · 1⤊ 0⤋
-3^-2-2/-2^-3-2^0 = 15.1111111111
2006-09-17 14:30:22 · answer #3 · answered by Anonymous · 0⤊ 0⤋
www.purplemath.com
2006-09-17 14:29:25 · answer #4 · answered by truttman 3 · 1⤊ 0⤋