Question

Which mathematical sentence does NOT belong to the group?

A. a^2 − 6 ≤ y

B. x^2 + 3x ≥ −1

C. 4c^2 − 2c > 2c

D. 2(r + 1) < r^2 + 1

Answer 1

Answer: A

Explanation:

I think it’s because it has 2 variable (a and y) while the other only has 1