Question

Which expressions are quadratic expressions? Check all that apply.

z2
2x + 7x – 10
2x2 + 9x – 7
500(0.25)t – 1
13x3 + 21x2 – 5

Answer 1

2x^2+9x-7

Explanation:

Answer 2

Explanation:

the quadratic expression is

2x^2+9x-7

this is the only one