Answer:
n completing method square the first we do is making the coefficient of as one. so in order to make the coefficient as one we divide each term by 7 in given equation
Since, 7 is the coefficient of
Now, if we take 7 as common on left hand side of an equation then it becomes .
Now, we can compare the equation with
Hence, we get the value of A=7.
Step-by-step explanation: