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By fast inspection x = 2.
I used the binomial expansions, which caused all the radicals to cancel out leaving 3^x + x(x-1)3^(x-2) + ... = 11We can quickly see x
Another way to think. Both terms being raised to x th power are >1 so x cannot be negative which makes each term 4 so if x>=3 makes the first term alone >=64 so x
where do you get these problems
books, internet, friends, and home-made
thumbnail wrong
fixed now. thank you!
By fast inspection x = 2.
I used the binomial expansions, which caused all the radicals to cancel out leaving
3^x + x(x-1)3^(x-2) + ... = 11
We can quickly see x
Another way to think.
Both terms being raised to x th power are >1 so x cannot be negative which makes each term 4 so if x>=3 makes the first term alone >=64 so x
where do you get these problems
books, internet, friends, and home-made
thumbnail wrong
fixed now. thank you!