Ask
your own question, for FREE!
Mathematics
8 Online
OpenStudy (anonymous):
look in comments for problem:
Divide
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
\[\left(\begin{matrix}16x^2-9 \\ 64x^3-27\end{matrix}\right)\times \left(\begin{matrix}4x-3\\ 4x+3\end{matrix}\right)\]
OpenStudy (anonymous):
i mean multiply*
OpenStudy (anonymous):
you cant multiply a 2x1 matrix with a 2x1 matrix
OpenStudy (anonymous):
Dot product?
OpenStudy (anonymous):
i dont understand? whats a 2x1 matrix
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
oh i thought you are talkin about matrices
never mind
OpenStudy (anonymous):
is it dot product that u are talking about
OpenStudy (anonymous):
its rational expressions
OpenStudy (anonymous):
then factorise the terms
the 4x-3 and 4x+3 gets cancelled off
OpenStudy (anonymous):
do you factor the 16x^2-9?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
a^2-b^2 =(a-b)(a+b)
a=4x and b=3
OpenStudy (anonymous):
so then the same for 64x^3-27?
OpenStudy (anonymous):
a^-b^3=(a-b)(a^2+ab+b^2)
with same a and b
OpenStudy (anonymous):
\[\frac{4 x-3}{16 x^2+12 x+9)}\]
OpenStudy (anonymous):
@ljensen dont give the answers, its against the code of conduct man and the MODERATORS are watching(:P)
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
Then I should hear from them soon...
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!