Which of the following expressions is equivalent to 9x^2 +169 ?

A. (3x +13)^2
B. (3x+13i)^2
C. (3x-13i)^2
D. (3x - 13)(3x +13)
E. (3x -13i)(3x +13i)

After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

10x − 5y + 14 = 0 whats the answer pls