All or the following are equivalent except
A. x+(-2)
B. x-(-2)
C.-2+x
D. x-2

Can someone check if i did this correct. it’s number 4 if you’re wondering.

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

If the discriminant if a quadratic equation is 4 which statement describes the roots?