Firuz V. answered • 10/07/21
Tutor
5
(8)
20+ years of experience teaching in various levels
8x^3+4x^2-18x-9=0
4x^2(2x+1)-9(2x+1)=0
(4x^2-9)(2x+1)=0
(2x-3)(2x+3)(2x+1)=0
x=3/2, -3/2, -1/2
Nick Y.
asked • 10/07/21Help on quadratic again
3x^3+4x^2-9=18x-5x^3
equal it to zero
Follow
•
2
Add comment
More
Report
2 Answers By Expert Tutors
Raymond B. answered • 10/08/21
Tutor
5
(2)
Math, microeconomics or criminal justice
3x^3 + 4x^2 - 9 = 18x -5x^3
8x^3 +4x^2 - 18x - 9 = 0
4x^2(2x +1) - 9(2x+1) = 0
(4x^2-9)(2x+1) = 0
(2x+3)(2x-3)(2x+1) = 0
x= 3/2, -3/2, -1/2
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
