Here you can keep your brain fit by solving math related problems and also earn SBI or sometimes other rewards by doing so.

The problems usually contain a mathematical equation that in my opinion is fun to solve or has an interesting solution.

I will also only choose problems that can be solved without additional tools(at least not if you can calculate basic stuff in your head), so don't grab your calculator, you won't need it.

*↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓*

#### Every friday and tuesday(most of the time and depending on your timezone)!

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# Rules

#### No upvote, No resteem, No follow required!

#### I will give 1 SBI to 1 random person who put a correct or partly correct solution of the problem in a comment.

#### You have 48 hours to solve it.

#### And one more thing: If there are infinitely many solutions, I only want general solutions or integer solutions!

*↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓↑↓*

# Problem

After the "drawing contest" last time I want to get back to some formulas again:

This might look scary at first because of the high powers, but it is actually easier than it looks.

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To everyone who already participated in a past contest, come back today and try a new problem(tell me if you don't want to be tagged):

@addax @ajayyy @athunderstruck @bwar @contrabourdon @golddeck @heraclio @hokkaido @iampolite @masoom @mmunited @mytechtrail @ninahaskin @onecent @sidekickmatt @sparkesy43 @syalla @tonimontana @vote-transfer @zuerich

In case no one gets a result(which I doubt), I will give away the prize to anyone who comments.

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@contrabourdon sponsors this contest with 2 STEEM weekly.

You can support him by using a witness vote on untersatz, so he can further support this and other contests.

sparkesy4358 · 지난달Unless I miss my guess this equation works when n=0

Posted using Partiko Android

quantumdeveloper57 · 지난달There are also 2 other solutions.

zuerich59 · 지난달There are 3 solutions:

x1 = 0

x2 = 0.809017

x3 = -0.309017

mobi7265 · 지난달I agree with @sparkesy43, because after taking n

^{8}it turns into4n

^{2}- 2n - 1 = 0and, there is no way to make it zero with any positive or negative number.

So, the correct answer is "n = 0".

quantumdeveloper57 · 지난달That's wrong.

There are two solutions for

`4n² - 2n - 1 = 0`

They just aren't integers, that's why you didn't find them.

mobi7265 · 지난달Hahaha ... It gets interesting ... My mathematical skills got rusty. I didn't even think about the quadratic formula, last time used it in mid 90's, I think.

Two solutions are

`(1+sq.rt(5))/4 & (1-sq.rt(5))/4`

where, a = 4, b = -2 & c = -1addax60 · 지난달Hi @quantumdeveloper, a small upvote and a tip.

$trendotoken

Thanks for playing the ADDAX trading game!

trendotoken56 · 지난달Congratulations @addax, you are successfuly trended the post that shared by @quantumdeveloper!

@quantumdeveloper will receive

0.54122400TRDO & @addax will get0.36081600TRDO curation in 3 Days from Post Created Date!"Call TRDO, Your Comment Worth Something!"^{To view or trade TRDO go to steem-engine.com Join TRDO Discord Channel or Join TRDO Web Site}contrabourdon67 · 지난달@giphy curate 100

Posted using Partiko iOS

giphy52 · 지난달Upvoted 👌

Powered by witness untersatz!

trendotoken56 · 지난달Congratulations @quantumdeveloper, your post successfully recieved

0.541224TRDO from below listed TRENDO callers:^{To view or trade TRDO go to steem-engine.com Join TRDO Discord Channel or Join TRDO Web Site}