Which of the following expressions equals 0 when x < 0 an...

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PS · Problem Solving

555-605

Absolute Values/Modules

Which of the following expressions equals 0 when

x < 0

and equals

x^2

when

x ≥ 0

?

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A

x|x|

B

x + |x|

C

2x^2 - x|x|

D

\frac{1}{4}(x + |x|)^2

E

(\frac{x - |x|}{2})^2

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