Question

Find a cubic function with the given zeros.

Square root of seven., -Square root of seven., -4

Answer 1

\[\sqrt{7}, -\sqrt{7}, -4\]

Answer 2

you are told
x= sqr(7), or x-sqr(7)= 0
x= -sqr(7) or x+ sqr(7)=0
x= -4 or x+4=0

multiply out
\[ (x-\sqrt{7})(x+\sqrt{7})(x+4) \]
I would first do \[(x-\sqrt{7})(x+\sqrt{7}) \]

Answer 3

would that be \[x^{2}-7\] @phi

Answer 4

then\[x ^{3}+4x ^{2}-7x-28\]?

Answer 5

what's the question

Answer 6

http://www.wolframalpha.com/input/?i=%E2%88%9A7%2C+-%E2%88%9A7%2C+-4

Answer 7

does that help

Answer 8

@kirarittgers

Answer 9

did u get it @kirarittgers

Answer 10

no lol but i have the answer so thank youuu