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Sum of the solutions of
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08 Jan 2018, 14:12
08 Jan 2018, 14:12
Expert Reply
00:00
Question Stats:
82% (00:49) correct
17% (00:57) wrong based on 98 sessions
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Quantity A |
Quantity B |
Sum of the solutions of \(x^2 - 3x -10 = 0\) |
Sum of the solutions of \(x^2 - 4x +3 = 0\) |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Kudo for the right answer and explanation.
Re: Sum of the solutions of
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10 Jan 2018, 01:14
10 Jan 2018, 01:14
1
Lets factor the QA.
X^2 - 3x - 10 = 0
So the solution is (x+3)(x-5)
Or x = -3 OR + 5
The sum will give is 2.
Quantity B
(X-1)(X-3)
Solutions are 1 and 3. So the sum is 4.
Quantity B is bigger.
X^2 - 3x - 10 = 0
So the solution is (x+3)(x-5)
Or x = -3 OR + 5
The sum will give is 2.
Quantity B
(X-1)(X-3)
Solutions are 1 and 3. So the sum is 4.
Quantity B is bigger.
Re: Sum of the solutions of
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16 Aug 2018, 19:22
16 Aug 2018, 19:22
1
Shouldnt column A be (X+2)(X-5) = 0, hence x= -2 or +5
