| answers: a a c b b a b |
| 4.4 |
| 1. Multiply. (x - 4) (x + 8) |
|
ax2
+ 4x - 32 |
|
bx2
- 12x - 32 |
|
cx2
- 4x - 32 |
|
dnota |
| 2. Multiply. 7t2(3t12
- 1)
|
|
a21t14
- 7t2 |
|
b21t24
- 7t2 |
|
cnota |
|
d |
| 4.5 |
| 3. Multiply. (m - 10)(m + 10) |
|
a m2
+ 100 |
|
bm2
- 10 |
|
cm2
- 100 |
|
dnota |
| 4. Multiply . ( t - 3)(t2 +
1) |
|
at3
- 3t2 - t + 3 |
|
bt3
- 3t2 + t - 3 |
|
ct3
- 3t2 - t - 3 |
|
dnota |
| 4.6. |
| 5. Subtract. ( x3 -
y3) - (-2x3 + x2y - xy2
+ 2y3) |
|
a3x3
- x2y + xy2 + 3y3 |
|
b3x3
- x2y + xy2 - 3y3 |
|
c3x3
+ x2y + xy2 - 3y3 |
|
dnota |
| 6. Multiply. (7a - 6b)(5a
+ 4b) |
|
a35a2
- 2ab - 24b2 |
|
b35a2
- 2ab + 24b2 |
|
c35a2
+ 2ab - 24b2 |
|
dnota |
| 7. Add. (4x4y - 8x6y2
+ 12x8y6) + (4x4y +
8x6y2 +12x8y6 ) |
|
a 8x4y
+ 8x6y2 + 24x8y6 |
|
b 8x4y
+ 24x8y6 |
|
c 8x4y
+ 16x6y2 + 24x8y6 |
|
dnota |
| written: |
| 8. Subtract. (4x4 - 8x6
+ 12x8) - (4x4 +
8x6 + 12x8 ) = -16x6 |
|
9. Multiply. (7a + 6b)(5a - 4b) = 35a2
+ 2ab - 24b2 |
|
10. Multiply: (r - t)2 = r2
- 2rt + t2 |
|
d. nota |
|
11. Written Problem: Multiply: (x + y)2 =
x2
+ 2xy + y2 |