Entry Test MCQ :: Basic Algebra
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| 31. |
What is the sum of 3x3 + 7x2 - 7 and 5x2+8x-9? |
| A. |
3x3 + 12x2 + 8x - 16 |
B. |
8x3 + 7x2 - 16 |
| C. |
3x3 + 5x2 + 8x - 2 |
D. |
none |
Answer: Option A
Explanation:
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| 32. |
Subtract 5x2-9x-10 from 8x2+10x-25 |
| A. |
3x2 + x + 15 |
B. |
3x2 - 19x - 15 |
| C. |
?3x2 - 19x + 15 |
D. |
13x2 + x - 35 |
Answer: Option B
Explanation:
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| 33. |
(1000002)2 - (999998)2 |
Answer: Option C
Explanation:
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| 34. |
If (1/x-x)2 = 50 what is the value of 1/x2+x2 |
| A. |
2 |
B. |
48 |
| C. |
52 |
D. |
can not be determined |
Answer: Option C
Explanation:
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| 35. |
(4x+5)(x-6)-(5x+7)(x+8) =? |
| A. |
4x2-30x+86 |
B. |
5x2-7x-56 |
| C. |
?x2-34x-86 |
D. |
x2+34x+86 |
Answer: Option C
Explanation:
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| 36. |
If 1/x+1/y=1/z and xy = z what is the average of x and y? |
Answer: Option B
Explanation:
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| 37. |
If a2-b2 = 21 and a2+b2=29 which of the following could be the value of ab? I- -10 II- 5?2 III- 10 |
| A. |
I only |
B. |
II only |
| C. |
III only |
D. |
I and III only |
| E. |
II and III only |
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Answer: Option D
Explanation:
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| 38. |
If a2+b2 = 8 and (a-b)2 = 4 what is the value of ab? |
Answer: Option C
Explanation:
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| 39. |
Which of the following is equal to (z+1/z)2-(z-1/z)2? |
Answer: Option B
Explanation:
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| 40. |
What is the value of a2-b2/a-b when a = 12.3 and b = 13.2? |
Answer: Option B
Explanation:
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