SOLUTION: Using the FOIL method. Trying to simplify 5x squared + 4x - 1

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Question 356278: Using the FOIL method. Trying to simplify 5x squared + 4x - 1
Found 2 solutions by rfer, CharlesG2:
Answer by rfer(16322) About Me  (Show Source):
Answer by CharlesG2(834) About Me  (Show Source):
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Using the FOIL method. Trying to simplify 5x squared + 4x - 1


5x^2 + 4x - 1
simplify by factoring then testing factors with FOIL (First Outer Inner Last)
(5x - 1)(x + 1) = 5x^2 + 5x - x - 1 = 5x^2 + 4x - 1