Hijk with h(-2, 5), i(2, 5), j(-4, -1) and k(-4, 3) in y=-x

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

Simplify the expression. -2/5(10+15m-20n)

If a is a nonzero real number then the reciprocal of a is