If f(x) = (x-6)(x +12), determine the x-intercepts of y = f(-3x).
Show your work.
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Answer:
x = -2, x = 4
Step-by-step explanation:
(-3x-6)(-3x+12)
foil method:
9x² - 18x - 72
9(x² - 2x - 8) = 0
(x+2)(x-4) = 0
x = -2 and x = 4