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x2 – 49 = 0
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15 Apr 2018, 04:07
15 Apr 2018, 04:07
Expert Reply
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Question Stats:
58% (00:35) correct
41% (01:10) wrong based on 29 sessions
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\(x^2 - 49 = 0\)
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.
Quantity A |
Quantity B |
\(x^2 - 7x\) |
\(-7x+49\) |
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.
Drill 2
Question: 3
Page: 510
Question: 3
Page: 510
Re: x2 – 49 = 0
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17 Apr 2018, 02:12
17 Apr 2018, 02:12
1
From the eqn \(x^2 = 49\)
therefore, \(x = 7, -7\)
when \(x\) is replaced by either \(7\) or \(-7\) the two quantities are equal
When \(x = 7\) both quantities are \(0\)
when \(x = -7\) both quantities are \(98\)
therefore, \(x = 7, -7\)
when \(x\) is replaced by either \(7\) or \(-7\) the two quantities are equal
When \(x = 7\) both quantities are \(0\)
when \(x = -7\) both quantities are \(98\)
Re: x2 – 49 = 0
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17 Apr 2018, 02:59
17 Apr 2018, 02:59
1
x can be eithr +7 or -7. In options A and B, the term including x are both -7x, and the other term has same value.
x^2 or 49, both are same.
Hence both A and B are equal.
x^2 or 49, both are same.
Hence both A and B are equal.
