Which are steps the could be used to slove 0=9(x2+6x)-18 by completing the square

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Respuesta :

akiran007 akiran007 · Answer 1 · 2019-12-22T04:32:31+01:00

Answer:

(x+3)²-11=0

Step-by-step explanation:

0=9(x2+6x)-18

0= 9x² +54x-18

0= 9( x²+6x-2) taking 9 common

0= x² +6x-2 (breaking the mid term to find the second element of the square

0 = (x)² +2(x)(3) +(3)² -2 -9 adding and subtracting the second element

0= (x+3)² -11 summing up

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Аноним Аноним · Answer 2 · 2019-12-22T04:43:09+01:00

Answer:

The correct answers are:

A) 18+81=9(x^2+6x+9)

D)11+(x+3)^2

Step-by-step explanation:

or if this is not a click all the apply question then this would be the answer.

answer: To solve this by completing the square, we want to get it to the form of: (x + 3)^2 = 9

There are multiple ways to get there.

First we could divide by 9 to get.

x^2 + 6x = 0

Then, add 9 to both sides to get:

x^2 + 6x + 9 = 9

Factor the left side:

(x + 3)^2 = 9

Now, you can solve this equation by completing the square.

(*I think you have a typo in your answer choices)

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