461 because you take 506-45 to find x(the unknown number)
Your answer should be organize, correct me if I’m wrong !
(-2 = √x - 7)x² (calculate)
(-9 = √x)x² (remove the parantheses)
-9x² + √x x²
p=36
because 15 is 3 times 5 so just multiply the perimeter
8x7x6 = 336. There are 8 possible options for slot 1, then 7 for 2, and 6 for the last slot.
