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Mathematics 17 Online
OpenStudy (anonymous):

Help please :) What value, in place of the question mark, makes the polynomial factor as a perfect square? x^2 + 14 + ?

OpenStudy (anonymous):

what is half of 14?

OpenStudy (anonymous):

7

OpenStudy (anonymous):

ok now what is \(7^2\) ?

OpenStudy (anonymous):

48

OpenStudy (anonymous):

49*

OpenStudy (anonymous):

you win

OpenStudy (anonymous):

So it's 49?

OpenStudy (anonymous):

now wasn't that easy?

OpenStudy (anonymous):

yes, it is 49

OpenStudy (anonymous):

a polynomial of 2nd order is said to be a perfect square if it is of the form (x+a)^2 so what do you require to add to the above expression to make it a perfect square remember (x+a)^2=x^2+2ax+a^2

OpenStudy (anonymous):

Yayy :D

OpenStudy (anonymous):

Alright thank you to the both of you

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