Given the following perfect square trinomial, fill in the missing term.
x2 − 16x + ____
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
(x-8)^2
OpenStudy (anonymous):
by completing the square
OpenStudy (anonymous):
Fill in the missing term.
OpenStudy (anonymous):
take half of the middle term and square it
OpenStudy (anonymous):
So the answer is 16?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
no
OpenStudy (anonymous):
what is half of 16?
OpenStudy (anonymous):
4
OpenStudy (anonymous):
16/2
OpenStudy (anonymous):
16/2 is 4!
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
its 8
OpenStudy (anonymous):
ohh yeah loll. i knew that.
OpenStudy (anonymous):
and then you square 8 to get the answer
OpenStudy (anonymous):
64
OpenStudy (anonymous):
yea
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
for trinomial
ax^2+bx+c
we have discriminant
b^2-4ac
here in given question a=1,b=-16 we need c
ok for perfect square we need the discriminant
so find the discriminant of above
(-16)^2-4(1)c=0
so solve for c
4c=16^2
c=16^2/4
hope it is clear
OpenStudy (anonymous):
that how you complete the square
OpenStudy (anonymous):
take half the middle term and square
OpenStudy (anonymous):
assuming that the first term coefficient is 1
OpenStudy (anonymous):
4x2 + ___x + 49
What about this one?
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
@MeganLewis close the current Question and ask new question . thanks!