SOLUTION: simplify all square roots and answers should not be decimals Factor or solve the following 4x^3-8x^2-9x+18=0 Thanks!

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Question 1174729: simplify all square roots and answers should not be decimals
Factor or solve the following
4x^3-8x^2-9x+18=0
Thanks!
Found 2 solutions by josgarithmetic, ewatrrr:
Answer by josgarithmetic(39620) About Me  (Show Source):
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!

Hi

4x^3-8x^2-9x+18=0   (x=2 is one solution)
2	4	-8	-9	18
		8	0	-18
	4	0	-9	0
   4x^2 - 9 = 0
   x^2 = 9/4
    x =  ± 3/2
    x = -3/2 0r 3/2  0r  2 
By graphing one can easily determine the solutions:
Recommend the free graph software  https://www.padowan.dk/download/ 
Wish You the Best in your Studies.