Asked by Sam

Simplify: 8rs^2/5s^4 times (2r^3)^-1
Answered by Henry
8rS^^2 / 5S^4 * (2r^3)^-1,
8rS^@ / (5S^4*2r^3) =
8rS^@ / 10S^4r^3 = 4rS^2 / 5r^3S^4 =
4r^-2S^-2 / 5 = 4 / 5r^2S^2.
Answered by Henry
Correction:
8rS^2 / 5S^4*(2r^3)^-1,
8rS^2 / (5S^4*2r^3) =
8rS^3 / 10S^4r^3 = 4rS^2 / 5r^3S^4 =
4r^-2S^-2 / 5 = 4 / 5r^2S^2.
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