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If \(x* y = xy -2 (x + y)\) for all integers \(x\) and \(y,\) the \(2 * (-3) =\)

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Re: If \(x* y = xy -2 (x + y)\) for all integers \(x\) and \(y,\) the \(2 * (-3) =\)

by Jay@ManhattanReview » Thu Jul 02, 2020 3:34 am
M7MBA wrote: ↑
Thu Jul 02, 2020 12:56 am
 If \(x* y = xy -2 (x + y)\) for all integers \(x\) and \(y,\) the \(2 * (-3) =\)

A) -16

B) -11

C) -4

D) 4

E) 16

[spoiler]OA=C[/spoiler]

Source: Official Guide
Given that \(x* y = xy -2 (x + y)\), we have

\(2 * (-3) = 2\times(-3) -2 (2-3)=-4\)

Correct answer: C

Hope this helps!

-Jay
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Re: If \(x* y = xy -2 (x + y)\) for all integers \(x\) and \(y,\) the \(2 * (-3) =\)

by Scott@TargetTestPrep » Fri Jul 10, 2020 4:44 am
M7MBA wrote: ↑
Thu Jul 02, 2020 12:56 am
 If \(x* y = xy -2 (x + y)\) for all integers \(x\) and \(y,\) the \(2 * (-3) =\)

A) -16

B) -11

C) -4

D) 4

E) 16

[spoiler]OA=C[/spoiler]

Source: Official Guide
Solution:

2 * (-3) = 2(-3) - 2(2 + (-3)) = -6 - 2(-1) = -6 + 2 = -4

Answer: C

Scott Woodbury-Stewart
Founder and CEO
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