SOLUTION: FACTOR m^2 + 20 + 21m with steps. Is the answer prime? FACTOR 6x^2 - 4x -5 with steps. Is the answer prime? FACTOR 6z^2 - 13z + 5 with steps using ac method. Is the answer pr

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: FACTOR m^2 + 20 + 21m with steps. Is the answer prime? FACTOR 6x^2 - 4x -5 with steps. Is the answer prime? FACTOR 6z^2 - 13z + 5 with steps using ac method. Is the answer pr      Log On


   

Question 1124553: FACTOR m^2 + 20 + 21m with steps. Is the answer prime?
FACTOR 6x^2 - 4x -5 with steps. Is the answer prime?
FACTOR 6z^2 - 13z + 5 with steps using ac method. Is the answer prime?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
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FACTOR 6z^2 - 13z + 5 with steps using ac method. Is the answer prime?
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Just checking different linear factor combinations
6x%5E2-13x%2B5=%282x-1%29%283x-5%29, and no other combination will do this.



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FACTOR 6x^2 - 4x -5 with steps. Is the answer prime?
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Different simple linear factor combinations seem to not give matching results.
Discriminant is %28-4%29%5E2-4%2A6%28-5%29=16%2B120=136, which is not a perfect square; and its square root is not an integer.