SOLUTION: x3(squared)-9x=0

Question 206733This question is from textbook Elementary and Intermediate
: x3(squared)-9x=0 This question is from textbook Elementary and Intermediate

Answer by profemmanuel2q@yahoo.com(15) (Show Source): You can put this solution on YOUR website!
x^3 - 9x = 0 Factorise x out
x (x^2 - 9) = 0
x = 0, x^2 - 9 = 0
Solving x^2 - 9 = 0 ( This is a difference of two square
(x + 3) ( x - 3)= 0
Equate each of them to zero
x = -3, and x = 3
Hence, x=0, x = 3, and x = -3
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