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Mathematics 12 Online
OpenStudy (anonymous):

Which number must be added to each side of the following equation to make it a perfect square trinominal: x^2-6x=1. Possible answers include -9, 8, 9, or 36.

OpenStudy (dtan5457):

to get c you need to use the formula b/2^2

OpenStudy (dtan5457):

if you add 9 to the first side you can factor it to (x-3)(x-3)

OpenStudy (dtan5457):

id go with 9

OpenStudy (anonymous):

I thought so, but when i did it i got 9. This makes the right side 10, which is not a perfect square.

OpenStudy (dtan5457):

hm

OpenStudy (dtan5457):

i got it

OpenStudy (dtan5457):

it's 8

OpenStudy (dtan5457):

x^2-6x+8=9

OpenStudy (dtan5457):

(x-4)(x-2) and 9 is a perfect square

OpenStudy (anonymous):

Oh, I see. Thank you!

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