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x is different from 3
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19 Apr 2019, 11:21
19 Apr 2019, 11:21
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Expert Reply
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Question Stats:
70% (01:12) correct
30% (01:20) wrong based on 80 sessions
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\(x \neq 3\) and \(x \neq 6\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
\(\frac{2x^2-72}{x-6}\) |
\(\frac{2x^2-18}{x-3}\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
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Re: x is different from 3
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20 Apr 2019, 05:22
20 Apr 2019, 05:22
2
Carcass wrote:
\(x \neq 3\) and \(x \neq 6\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
\(\frac{2x^2-72}{x-6}\) |
\(\frac{2x^2-18}{x-3}\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
QUANTITY A: \(\frac{2x^2-72}{x-6}=\frac{2(x^2-36)}{x-6}=\frac{2(x+6)(x-6)}{x-6}=2(x+6)=2x+12\)
QUANTITY B: \(\frac{2x^2-18}{x-3}=\frac{2(x^2-9)}{x-3}=\frac{2(x+3)(x-3)}{x-3}=2(x+3)=2x+6\)
We have:
QUANTITY A: 2x + 12
QUANTITY B: 2x + 6
Subtract 2x from both quantities to get:
QUANTITY A: 12
QUANTITY B: 6
Answer: A
Cheers,
Brent
Re: x is different from 3
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26 Sep 2019, 15:07
26 Sep 2019, 15:07
Brent, the question states that x cannot equal 6 or 3. However, is it not possible for x to equal -6 or -3, and therefore have the answer be 'D' ?
Thanks so much!
QUANTITY A: \(\frac{2x^2-72}{x-6}=\frac{2(x^2-36)}{x-6}=\frac{2(x+6)(x-6)}{x-6}=2(x+6)=2x+12\)
QUANTITY B: \(\frac{2x^2-18}{x-3}=\frac{2(x^2-9)}{x-3}=\frac{2(x+3)(x-3)}{x-3}=2(x+3)=2x+6\)
We have:
QUANTITY A: 2x + 12
QUANTITY B: 2x + 6
Subtract 2x from both quantities to get:
QUANTITY A: 12
QUANTITY B: 6
Answer: A
Cheers,
Brent
Thanks so much!
GreenlightTestPrep wrote:
Carcass wrote:
\(x \neq 3\) and \(x \neq 6\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
\(\frac{2x^2-72}{x-6}\) |
\(\frac{2x^2-18}{x-3}\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
QUANTITY A: \(\frac{2x^2-72}{x-6}=\frac{2(x^2-36)}{x-6}=\frac{2(x+6)(x-6)}{x-6}=2(x+6)=2x+12\)
QUANTITY B: \(\frac{2x^2-18}{x-3}=\frac{2(x^2-9)}{x-3}=\frac{2(x+3)(x-3)}{x-3}=2(x+3)=2x+6\)
We have:
QUANTITY A: 2x + 12
QUANTITY B: 2x + 6
Subtract 2x from both quantities to get:
QUANTITY A: 12
QUANTITY B: 6
Answer: A
Cheers,
Brent
