Answer:
A.81/4
Step-by-step explanation:
x^2-9x
This is in the form x^2 + bx
To complete the square, we take b/2 then square it and add it
b =-9
b/2 = -9/2
(b/2) ^2 = (-9/2) ^2 = 81/4
Answer:
A.81/4
Step-by-step explanation:
To find the number that we add to complete the square, we take half of the value of b in the equation and then square it.
The value of b in this equation is -9; this makes half of it -9/2. Squaring this,
(-9/2)² = 81/4.
