The first few steps in solving the quadratic equation 9x2 + 49x = 22 − 5x by completing the square are shown.9x2 + 49x = 22 − 5x9x2 + 54x = 229(x2 + 6x) = 22which is the best step to do next to solve the equation by completing the square? a. 9(x2 + 6x + 3) = 25b. 9(x2 + 6x + 3) = 49c. 9(x2 + 6x + 9) = 31d. 9(x2 + 6x + 9) = 103

The next step is to add the square of half the x-coefficient inside parentheses and the equivalent amount to the other side of the equation.

9(x² + 6x + (6/2)²) = 22 + 9(6/2)²

9(x² + 6x + 9) = 103 . . . . . matches selection D.

D as in Diesel

Step-by-step explanation:

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

its a trick question

step-by-step explanation:

dogs love water, just turn on the hose and it will run in circles chasing the water all day : )