Logo

Why is (n-1)(n+1)=n^2-1?

11.06.2025 09:03

Why is (n-1)(n+1)=n^2-1?

xxx x

(n - 1)(n + 1)

xxx

Tomato Recall Escalates to Highest Health Risk Alert—Here’s What You Need to Know - Real Simple

n^2 - n + n - 1

n^2 - 1

Move the nub up to the top:

Semiconductor Supplier GlobalFoundries to Spend $16B to Boost US Chip Production - Investopedia

The more direct answer is to look at a rectangle with sides of n + 1 and n - 1, let’s go with n = 2

xxx x

So, that’s a rectangle with sides 2 and 4.

What role did China play in the signing of the "Beijing Declaration" between Fatah and Hamas? What other information is worth noting for talks among Palestinian factions in Beijing?

If you cut off the end of that rectangle, you make it smaller, 2 * 3 and a separate nub of size 1 * 2

The basic answer is that you cross-multiply the values in each factor:

And you are left with almost a square. One less than the square of side n.

How can one justify in Sweden that total subsidies for public green energy initiatives being approximately 8.2 billion SEK per year? Electric cars at market price typically cost an average of 500,000 SEK which is above household budgets.

xxx

xxxx

xxxx

Eric Trump says World Liberty will buy 'substantial position' in Trump memecoin, nixes 'official' wallet - The Block

xx