P=10 I believe that’s the answer
Answer:
Step-by-step explanation:
Let 
be the rate at which Jaquez completes his test.
Let 
part of test be completed by Jaquez in 
hours.
Then,
Given that Jaquez completed 1/8 of his test in 3/5 hour.
So,
To know how much he completes in one hour,substitute 
in the above equation.
So,
Jaquez completes 
of his test in hour
Arrange your given equation to resembles the form
a^2 +2ab+ b^2 because this equals (a+b)^2
So we get:
y^2+16y+8^2=0
Now compare
y^2+16y+8^2 to a^2 +2ab+ b^2
So we got
y^2+2•8 y+8^2=0 which equals (y+8)^2
