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X is different from zero

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Carcass
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X is different from zero [#permalink] New post   15 May 2018, 16:08
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\(x \neq 0\)

Quantity A
Quantity B
\(3x^2\)
\((3x)^2\)


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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B
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GreenlightTestPrep
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Re: X is different from zero [#permalink] New post   22 May 2018, 07:10
1
Carcass wrote:
\(x \neq 0\)

Quantity A
Quantity B
\(3x^2\)
\((3x)^2\)


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.


We can solve this question using matching operations

Given:
Quantity A: 3x²
Quantity B: (3x)²

Simplify Quantity B to get:
Quantity A: 3x²
Quantity B: 9x²

Since x² must be POSITIVE, we can safely divide both quantities by x² to get:
Quantity A: 3
Quantity B: 9

Answer: B

Cheers,
Brent

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Re: X is different from zero [#permalink]
22 May 2018, 07:10
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