Answers triangle bfe triangle bfh triangle bfd triangle bfg

Umm.. just started this 2day and its not on my notes(p′︵‵。)

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

Which ordered pair (c,d) is a solution to the given system of linear equations- c+2d=13 -9c-4d=-15