The graph of a polynomial f(x) = (2x - 3)(x - 4)(x + 3) has x-intercepts at 3 values. What are they?
A few things to note:
The 3 monomials are:
Find all 3 x-intercepts:
x = {-3, 3/2, 4}
A few things to note:
- X-intercepts are found when y (or f(x)) is 0.
- On the right side, we have 3 monomials.
- Therefore, y or f(x) could be 0 when any of these monomials is 0
The 3 monomials are:
- 2x - 3 = 0
- x - 4 = 0
- x + 3 = 0
Find all 3 x-intercepts:
- 2x - 3 = 0. Using our equation calculator, we see that x = 3/2 or 1.5
- x - 4 = 0 Using our equation calculator, we see that x = 4
- x + 3 = 0 Using our equation calculator, we see that x = -3
x = {-3, 3/2, 4}