Which one is it?

I'll mark brainliest if correct

How do you find the area of a triangle

Empty box + box + empty box fill in the box is equal to 30 how

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares