Given that (√3)^7 + (√3)^5 + (√3)^3 + 42(√3) may be expressed as 3^κ,(adsbygoogle = window.adsbygoogle || []).push({});

find the value of κ

Now I know that (√3)^ 7 is the same as 3^3.5 so I have 3.5, 2.5 and 1.5 but i have no idea how to calculate 42 (√3). Please help :(

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# Help with indices please!

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