4m^2-20mn+25n^2, a perfect square trinomial
Answer:

Step-by-step explanation:
-4(8+y)=9
Distribute:
-32-4y=9
Add 32 on both sides:
-4y=41
Divide -4 with 41:
y=-41/4
Answer:
No
Step-by-step explanation:
There's no such thing as -sin
Answer:
this 4 week ago so i really dont need to answer free point
Step-by-step explanation: