Posted by Mike on Friday, October 19, 2007 at 6:54pm.
Solve the polynomial equation and graphy it on a number line. Express the solution set and interval notation. and which brackets to use either () or []
15X^2 < 14x + 1

Math  Reiny, Friday, October 19, 2007 at 7:43pm
This is an inequation, not an equation.
take everything to one side
15x^2  14x  1 < 0, it factors
(15x+1)(x1) < 0
If this had been the equation
y = (15x+1)(x1) it would have been a parabola opening upwards with xintercepts of 1/15 and 1
Between those two values the graph would have been below the xaxis
so the solution set is 1/5 < x < 1
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