How to simplify 4r^-3 multiply 2r^2?

2009-01-04 9:38 am

Please help me simplify the following expression. Can you please show your work so I can understand how to do this. The ^-3 and ^2 are exponents.

回答 (6)

2009-01-04 9:47 am

✔ 最佳答案

(4r^-3)(2r^2)
= (4)(2)(r^-3)(r^2)
= 8[r^(-3 + 2)]
= 8r^-1
= 8(1/r)
= 8/r

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2009-01-04 10:21 am

4 x 2 x r^(-3) x r ²
8 r^(-1)
8 / r

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2009-01-04 9:56 am

Simply multiply the coefficients and add the indices to get

8r^-1 which is 8/r

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2009-01-04 9:48 am

(4r^-3)(2r^2) = 8r^(-3+2) = 8r^-1 = 8/r

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2009-01-04 9:45 am

8 / r or 8* r^(-1)

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2009-01-04 9:41 am

8 / r or 8* r^(-1)

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