What else you can do in this:
Take p common:
\[\huge 7p(p^2 - 1)\]
Use:
\[(a^2 - b^2) = (a-b)(a+b)\]
\[\huge \color{green}{= 7p(p+1)(p-1)}\]
OpenStudy (anonymous):
\(\huge \color{blue}{\textbf{Welcome To Openstudy..}}\)
OpenStudy (anonymous):
thank you
OpenStudy (anonymous):
Welcome dear..
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
so my answers for the last problem for my study guide are
79^3 or 7p^3-p
OpenStudy (anonymous):
It is later one;;
\[7p^3 - p..\]
OpenStudy (anonymous):
okay thank you soo much I have a few more questions if you don't mind
OpenStudy (anonymous):
√2(x-√5)
OpenStudy (anonymous):
Do it yourself..
I am giving you the formula:
\[\huge \sqrt{a}(b - \sqrt{c}) = b \sqrt{a} - \sqrt{a \times c}\]
Here, a = 2, b= x and c = 5
Plug in the values and solve..
Still Need Help?
Join the QuestionCove community and study together with friends!
Sign Up
OpenStudy (anonymous):
ok thanks and do I use the formula for this problem as well? 5√3 (2√3 +6√19)
OpenStudy (anonymous):
Yes the same formula..
You have to just distribute 5root(3) to the parenthesis..
OpenStudy (anonymous):
okay hopefully I get it
OpenStudy (anonymous):
would the answer for the first question be 2x sqrt2?