Thirty percent of a number is the same as one half the number decreased by 40

Given that abcd is a parallelogram solve for m

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

Place the following steps in order to complete the square and solve the quadratic equation,