Question

Choose all of the expressions below which are greater than or equal to 0 for all values of x.

7x^2

x^2+1

x^2-6

(x-3)^2+1

(x+5)^2-9

(x-4)^2



See the attached screenshot for further clarification.

Answer 1

7x², x² + 1, (x - 3)² + 1, (x - 4)²