school is asking us to find the probability of dogs breeding I’m sorry I don’t understand
Answer:
3 +- 2i
Step-by-step explanation:
Answer:
Option A 
Step-by-step explanation:
we know that
The perimeter of the rectangle is equal to
we have
-----> equation A
substitute the value of L in the equation A
Find the perimeter
Completing the square
alrighty
minus 31 both sides
x²+12x=-31
take 1/2 of the linear coefient and square it
12 is the linear coefient
12/2=6, (6)²=36
add that to both sides
x²+12x+36=36-31
factor perfect square trinomial
(x+6)²=5
square root both sides, remember to take positive and negative root
x+6=+/-√5
so what you want to write is
x+6=√5 and
x+6=-√5
the solutions
minus 6 both sides
x=-6+√5 and -6-√5
