Answer:
3(5x−11)
Step-by-step explanation:
32+15x−42
15x−33
=3(5x−11)
d^4-81
(d^2)^2-(9)^2
Using formula
(d^2+9)(d^2-9)
21
my teacher said so
B. △RTS
△MON ≅ △RTS