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which is not an output for 2x squared-5? -3 45 27 -8

Mathematics
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the in/out table is obtained by the equation y = 2x^2 - 5. so if you add 5 and divide by 2 you'll get. (y+5)/2 = x^2. now, each of those are the y's (the output of the original equation) so if you stick in those values for y and you don't get a perfect square, then that choice is correct answer. for example, y=-3. x^2=1 perfect square. do this with the other numbers... until you don't get a perfect square.
He got the best medal^
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-8
I was typing it our but you had the best answer :)
good!... i thought what i wrote didn't make any sense... :)
out*
thanks Abbie23... :)
You're welcome dpalnc! :)
@Abbie23 , you could also put your solution down so you get a medal from me.
just did.. besides, there's more than 1 way to look at a problem. if the asker could not understand my method, maybe she'll understand yours... :)

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