Asked by Benny
35. For what range of values of 𝑥 is 3𝑥2 − 4𝑥 −
4 nagative?
A. − 2
3
< 𝑥 < 2
B. −2 < 𝑥 < 2
3
C. 𝑥 < − 2
3
, 𝑥 > 2
D. 𝑥 < −2, 𝑥 > 2
3
Answers
Answered by
oobleck
3𝑥2 − 4𝑥 − 4 = 0
(3x+2)(x-2) = 0
the parabola opens up, so y < 0 for x in (-2/3 , 2)
So, D is the answer, but your calculations are all wrong.
(3x+2)(x-2) = 0
the parabola opens up, so y < 0 for x in (-2/3 , 2)
So, D is the answer, but your calculations are all wrong.
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