X +5 = -6x - 16
add 16 to both sides
x+21 = -6x
add 6x to both sides
7x+21=0
factor out the seven
7(x+3)=0
if 7 times (x+3) = 0 then (x+3) must equal zero because 7 times 0 is 0
so x+3=0
subtract three from both sides
x= -3
Answer:
Step-by-step explanation:
10 time the number for friend equals the cost
Answer:
The other factor is 
Step-by-step explanation:
we know that
In this problem we have
and
-----> because is a factor
substitute and solve for b
so
Verify in the second equation
-----> 
-----> 
--> is ok
The other factor is
Your question has been heard loud and clear.
First one (x+2i)(x-2i) = x^2+4
Second one (x-2+2i)(x-2-2i) = x^2-4x+8
Third one (x+1+i)(x+1-i) = x^2+2x+2
Thank you
Edit: Sorry for taking 15 minutes I was calculating lol
