SOLUTION: I need help with competely factoring these problems then tell whether the polynomials is prime or not. 1. 3x2 - 27x + 60 2. x2 - 1.1x + 0.28 3. x4 + 3x2 + 2x3 + 6x

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I need help with competely factoring these problems then tell whether the polynomials is prime or not. 1. 3x2 - 27x + 60 2. x2 - 1.1x + 0.28 3. x4 + 3x2 + 2x3 + 6x       Log On


   



Question 242394: I need help with competely factoring these problems then tell whether the polynomials is prime or not.
1. 3x2 - 27x + 60
2. x2 - 1.1x + 0.28
3. x4 + 3x2 + 2x3 + 6x

Answer by nyc_function(2741) About Me  (Show Source):
You can put this solution on YOUR website!
3x^2 - 27x + 60
Factor out 3 and divide each term by 3.
3(x^2 - 9x + 20)
Now factor what lies inside the parentheses.
3(x - 5)(x - 4)
Notice that the answer includes THREE factors and they are: 3(x - 5)(x - 4)