How would the expression (x^2+4)(y^2+9) be rewritten using two squares

for apex its (xy-6)^2+(3x+2y)^2

Step-by-step explanation:

(xy-6)^2+(3x+2y)^2 was the correct answer on ap.ex

Step-by-step explanation:

answer: the dogs need to shift their focus to human scent.

its because the dogs being trained are for search and rescue thus they need to be able to track humans and their specific scent

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed