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Mathematics 13 Online
OpenStudy (anonymous):

help plz what is the value of c so that y=x^2+15x+c is a perfect square trinomial? A. 30 B. 15/2 C. 15/4 D. 225/4

OpenStudy (welshfella):

c must be the square of half the coefficient of x ( which is +15)

OpenStudy (welshfella):

OK?

OpenStudy (anonymous):

ok

OpenStudy (welshfella):

c = (15/2) ^2

OpenStudy (anonymous):

so 56 1/4

OpenStudy (welshfella):

* 15^2 / 2^2

OpenStudy (anonymous):

I'm sorry I'm having a hard time understanding what to do

OpenStudy (welshfella):

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