What polynomial should be subtracted from the polynomial y^2–5y+1 to get the difference equal to 5

Segment xy is dilated through point m with a scale factor of 2. which segment shows the correct result of the dilation

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)

Which of the following can be used to explain a statement in a geometric proof?