| b b b d |
| Sec. 4.6 |
| 1. Subtract. ( x3 -
y3) - (x3 + x12y - xy12
+ 12y3) |
|
a
- x12y + xy12 + 13y3 |
|
b
- x12y + xy12 - 13y3 |
|
c x12y + xy12 -
13y3 |
|
dnota |
| 2. Multiply. (7a - 6b)(5a
- 4b) |
|
a35a2
- 58ab - 24b2 |
|
b35a2
- 58ab + 24b2 |
|
c35a2
+ 58ab - 24b2 |
|
dnota |
| 3. Add. (4x4y + 8x6y2
+ 12x8y6) + (4x4y -
8x6y2 - 12x8y6 ) |
|
a 8x4y
+ 8x6y2 |
|
b 8x4y
|
|
c 8x4y
+ 16x6y2 |
|
dnota |
| 4. Subtract. (4x4y + 8x6y2
+ 12x8y6) - (4x4y +
8x6y2 + 12x8y6 ) |
| a -16x6y2 |
|
b8x4y |
|
c 24x8y6 |
|
dnota |
|
written problems |
|
5. Multiply. (b + 6a)(b + 4a) = b2 +10ab + 24b2 |
|
6. Multiply: (ab - cd)2 = (ab)2 -
2abcd + (cd)2 |
| 4.7 |
| 7. Divide. (4x43y26 - 8x61y22
+ 12x84y68)/(4x4y17) =
x39y9 - 2x57y5 +
3x80y51 |
| 8. Divide. (x2 + 8x +
15)/(x + 4) = (x + 4) - 1/(x + 4) |
| 4.8
|
| 9. Simplify . No negative exponents.
(x2y5/z
-15)-2 = 1/ (x4y10z
30 )
|
| 10. Convert to scientific notation. 0.0000000000000000000000000000089
= 8.9x10-30
|