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Mathematics 11 Online
OpenStudy (anonymous):

Choose the counterexample that disproves each conjecture. A student concludes that if x is a real number, then x^2 > x. A. x = 1 B. x = –2 C. x = 3 D. x = –1

OpenStudy (anonymous):

@vzfreakz I believe it's -2?

OpenStudy (anonymous):

ur right

OpenStudy (anonymous):

Hmm. This could give me a moment. It's asking for any real number that could be applied.

OpenStudy (anonymous):

actually

OpenStudy (anonymous):

couldn't it be B or C

OpenStudy (anonymous):

It could be 1.

OpenStudy (anonymous):

im confuzzled

OpenStudy (anonymous):

Yeah, I got stuck on that. Once I looked at the problem again I got -2 but im not sure

OpenStudy (anonymous):

confusing, haha

OpenStudy (anonymous):

yah I know

OpenStudy (anonymous):

what do you think @vzfreakz

OpenStudy (anonymous):

This is what I would do. Plug in all of the answer choices into x: x^2 Say for instance -2^2 = 4

OpenStudy (anonymous):

You are trying to find the false statement in this equation.

OpenStudy (anonymous):

oh a falso statement

OpenStudy (anonymous):

Counterexample = false statement

OpenStudy (anonymous):

then its A right

OpenStudy (anonymous):

because 1 is not greater than 1 it is equal to 1

OpenStudy (anonymous):

Yes, 'cause it's not a real number.

OpenStudy (anonymous):

so the answer is 1..

OpenStudy (anonymous):

Correct.

OpenStudy (anonymous):

there you go @eflatt13 :)

OpenStudy (anonymous):

thank you both

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