I need to see how the answer is obtained. Thanks for helping.
Surds and Indices
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JiaGengMaths
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Surds and Indices
Given that 3^(7/2)+3^(5/2)+3^(3/2)+42(3^1/2) may be expressed as 3^k find the value of k. (ans given states k=4.5)
I need to see how the answer is obtained. Thanks for helping.
I need to see how the answer is obtained. Thanks for helping.
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maggiemagnet
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- Joined: Mon Dec 08, 2008 12:32 am
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Re: Surds and Indices
JiaGengMaths wrote:Given that 3^(7/2)+3^(5/2)+3^(3/2)+42(3^1/2) may be expressed as 3^k find the value of k. (ans given states k=4.5)
I need to see how the answer is obtained. Thanks for helping.
Start by factoring out the square root. Then add up what's left and put that into "a power of three" form.
