SOLUTION: f(x)=(3x-1)^3

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Question 909103: f(x)=(3x-1)^3
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
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Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

f%28x%29=%283x-1%29%5E3 ....if you need to expand:
f%28x%29=+%283x-1%29%283x-1%29%283x-1%29
f%28x%29=+%289x%5E2-3x-3x%2B1%29%283x-1%29
f%28x%29=+%289x%5E2-6x%2B1%29%283x-1%29
f%28x%29=+9x%5E3-9x%5E2-18x%5E2%2B6x%2B3x-1
f%28x%29=+9x%5E3-27x%5E2%2B9x-1

f%28x%29=%283x-1%29%5E3 ....if you need to find solutions
f%28x%29=+%283x-1%29%283x-1%29%283x-1%29++
f%28x%29=0 if %283x-1%29%283x-1%29%283x-1%29=0++ or 3x-1=0++ since all factors are same, means three identical roots
3x-1=0++ => 3x=1++ => x=1%2F3++
+graph%28+600%2C+600%2C+-5%2C+5%2C+-10%2C+10%2C+%283x-1%29%5E3%29+