Answer:
-40 I wanna say
Step-by-step explanation:
22 = z + (-9) Switch the sides
z = 22 - (-9) Solve
z = 31 So, z = 31
Step-by-step explanation:
First, let's move the to the right-hand side so we can determine what constant we'll need on the left-hand side to complete the square:
From here, since the coefficient of the term is , we know the square will be (since it's half of ).
To complete this square, we will need to add to both sides of the equation:
Now we can take the square root of both sides to figure out the solutions to :
2^2a^2+b^2
4a^2+b^2
not sure if this is correct but here ya go