math help please 4x^2-36x+80=

Algebra
Tutor: None Selected Time limit: 1 Day

need help with this problem please

Aug 23rd, 2015

Thank you for the opportunity to help you with your question!

Factor out 4, 4(x^2-9x+20)

-5 and -4 add up to 9 so 

If you factor the problem, you get 4 (x-4)(x-5)=0

Solutions are x-4=0, x-5=0

X=4,x=5


Please let me know if you need any clarification. I'm always happy to answer your questions.
Aug 23rd, 2015

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