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#1 2006-10-01 11:23:23
- justlookingforthemoment
- Moderator
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Perfect square rule
Perfect square rule
Expand the following using the 'perfect square rule'.
1. (x + 4)²
2. (x + 1)²
3. (x - 5)²
4. (x - ½)²
5. (6 - x)²
6. (3x + 5)²
7. (2y + 10)²
8. (7x - 2)²
9. (4y - 3)(4y - 3)
10. (9x + 8)(9x + 8)
#3 2006-10-27 12:40:22
- creative1301
- Novice
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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. 