A Small Problem I Made

Can you do this problem in under one minute?

If \(f(x)=(x+1)(x^2+x+1)\), expand \(f(x)f(-x)\).

There's a nice trick here that I made

Note by Cody Johnson
3 years, 8 months ago

No vote yet
1 vote

  Easy Math Editor

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. list

  1. numbered
  2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1

paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
    # 4 spaces, and now they show
    # up as a code block.

    print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.
2 \times 3 \( 2 \times 3 \)
2^{34} \( 2^{34} \)
a_{i-1} \( a_{i-1} \)
\frac{2}{3} \( \frac{2}{3} \)
\sqrt{2} \( \sqrt{2} \)
\sum_{i=1}^3 \( \sum_{i=1}^3 \)
\sin \theta \( \sin \theta \)
\boxed{123} \( \boxed{123} \)

Comments

Sort by:

Top Newest

Doesn't it turn into \((x^3+1)(1-x^3)\) so it's basically just \(1-x^6\)

Daniel Liu - 3 years, 8 months ago

Log in to reply

What makes you post this, \(\textbf{Mr. TrollKing}\) ?

Aditya Raut - 3 years, 8 months ago

Log in to reply

I thought it was interesting to pair up the factors in two ways. It seemed interesting to me :)

Cody Johnson - 3 years, 8 months ago

Log in to reply

Yeah great, that is cool.,.

Aditya Raut - 3 years, 8 months ago

Log in to reply

Nice! 1 - x^6 is that correct? Don't know if I made within 60 s or 100 s, but I think I used the trick you are referring to.

Andrea Palma - 3 years, 3 months ago

Log in to reply

Yes its 1-x^6

Usama Khidir - 3 years, 8 months ago

Log in to reply

1-x^3

Ankit Roy Choudhury - 3 years, 8 months ago

Log in to reply

sorry, 1-x^6

Ankit Roy Choudhury - 3 years, 8 months ago

Log in to reply

×

Problem Loading...

Note Loading...

Set Loading...