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.Question 1
expand (x - 2)6.
x6 + 12x5 + 60x4 + 160x3 + 240x2 + 192x + 64
x6 - 12x5...
Mathematics, 22.09.2019 10:00 RomoTussion
Question 1
expand (x - 2)6.
x6 + 12x5 + 60x4 + 160x3 + 240x2 + 192x + 64
x6 - 12x5 - 60x4 - 160x3 - 240x2 - 192x - 64
x6 - 12x5 + 60x4 - 160x3 + 240x2 - 192x + 64
x6 - 12x5 + 60x4 - 160x3 + 240x2 - 160x + 64
2 points
question 2
expand (x + 2y)4.
x4 - 8x3y + 24x2y2 - 32xy3 + 16y4
x4 + 8x3y + 24x2y2 + 32xy3 + 16y4
x4 + 8x3y + 28x2y2 + 32xy3 + 16y4
x4 + 8x3y + 24x2y2 + 34xy3 + 16y4
2 points
question 3
how many terms are in the expansion (a + b)20.
19
20
21
22
2 points
question 4
expand (x - y)4.
x4 - 5x3y + 6x2y2 - 5xy3 + y4
x4 - 4x3y + 8x2y2 - 4xy3 + y4
x4 - 4x3y + 6x2y2 - 4xy3 + y4
x4 - 4x3y + 6x2y2 - 4xy3 - y4
2 points
question 5
expand (5a + b)5.
295a5 + 3125a4b + 1250a3b2 + 250a2b3 + 25ab4 + b5
3125a5 + 3125a4b + 1250a3b2 + 250a2b3 + 25ab4 + b5
3125a5 - 3125a4b + 1250a3b2 - 250a2b3 + 25ab4 - b5
3125a5 + 3125a4b + 1250a3b2 + 250a2b3 + 25ab4 + 10b5
2 points
question 6
expand (x + 2y)5.
x5 + 10x4y + 40x3y2 + 80x2y3 + 80xy4 + 32y5
x5 - 10x4y + 40x3y2 - 80x2y3 + 80xy4 - 32y5
x5 - 10x4y + 40x3y2 - 80x2y3 + 80xy4 - 32y5
x5 - 10x4y + 40x3y2 - 80x2y3 + 80xy4 - 32y5
2 points
question 7
what is the sixth term of (a - y)7?
21a3y4
-21a3y4
21a2y5
-21a2y5
2 points
question 8
what is the 6th term of (2x - 3y)11?
7,187,024x6y5
-7,185,024x6y5
7,185,024x6y5
-7,187,024x6y5
2 points
question 9
what is the sixth term of (x + y)8?
56x3y5
36x3y5
36x4y4
56x4y4
2 points
question 10
what is the seventh terms of (x + 4)8?
114,688x2
114,688x3
114,688x4
114,688x5
Answers: 1
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