Question

1. which of the following mathematical statements is a quadratic inequality?

a) 2x² – 3x – 5 = 0
b) 3t² + 7t – 2 < 0
c) 7r + 12 < 0
d) s² + 8s + 15 = 0

2. what is x in 2x² > 50?

a) x>5
b) x> -5
c) x < 5
d) x < -5

3. in 3x² - 22 > 5, what is x?

a) x² > 5
b) x² > -5
c) x² < 5
d) x² < -5 ​

Answer 1

Answer:

3.2

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