Square of numbers near 50

If a number is in the form of (50–n)^{2} suppose →45^{2} then the short trick of getting the answer is : \frac{(45–5)}{2}'/'5^{2} . Remember here '/'doesnot means divide,it means the distinction or \boxed{digits are separated} so my answer becomes 20/25 which means 2025 is the answer. Check it out !

Note by Mafia maNiAc
2 years ago

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. 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 1paragraph 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} $$\boxed{123}$$

Sort by:

Hey Here's a little reply XD For -10 < x < 10 (50 + x)^2 = 2500 + 100x + x^2 i.e. First 2 digits = 25 + x Last 2 digits = x^2 Very basic identity manipulation e.g. 55^2 = (50 + 5)^2 = 3025 See? 30? 25? XD

- 1 year, 12 months ago

Are u telling this to me?? First read what i have written then speak. Lol . Telling me identity

- 1 year, 11 months ago