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4 root of abc = 5

4 root of abcd = 3* root of 10

What is d?

i got it to 1,18 rounded upp.

Guest Sep 23, 2018
edited by Guest  Sep 23, 2018
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\(\text{If I understand what you're saying...}\\ 4\sqrt{abc}=5\\ 4\sqrt{abcd}=3\sqrt{10}\)

 

\(\dfrac{4\sqrt{abcd}}{4\sqrt{abd}}=\sqrt{d} = \dfrac{3\sqrt{10}}{5}\\ d = \left(\dfrac{3\sqrt{10}}{5}\right)^2 = \dfrac{9\cdot 10}{25} = \dfrac{18}{5}\)

Rom  Sep 23, 2018
edited by Rom  Sep 23, 2018

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