Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

#1 2006-10-01 11:23:23

justlookingforthemoment
Moderator
Award: Wink Sherlock

Offline

Perfect square rule

Perfect square rule

Expand the following using the 'perfect square rule'.

1. (x + 4)
2. (x + 1)
3. (x - 5)
4. (x - )
5. (6 - x)
6. (3x + 5)
7. (2y + 10)
8. (7x - 2)
9. (4y - 3)(4y - 3)
10. (9x + 8)(9x + 8)

 

#2 2006-10-04 01:11:44

Kurre
Power Member

Offline

Re: Perfect square rule

 

#3 2006-10-27 12:40:22

creative1301
Novice

Offline

Re: Perfect square rule

x2+8x+16
x2+2x+1
x2-10x+25
x2-x+1/4
36-12x+x2
9x2+30x+25
4y2+40y+100
49x2-28x+4
16y2-24y+9
81x2+144x+64

i did it in 1 min 12 secs. smile

 

Board footer

Powered by FluxBB