Question

When solving x2 + 10x + 3 = 0 by completing the square, which of the following is a step in the process?

(x + 5)2 = 28
(x + 5)2 = 22
(x − 5)2 = 22
(x − 5)2 = 28

Answer 1

@SamsungFanBoy

Answer 2

@mathstudent55 @Michele_Laino

Answer 3

Complete the square what do you do first?

Answer 4

thats the issue idk...

Answer 5

aX^2+bx +c= 0 Step one get rid of the c...So in your equation we need to get +3 to the other side of the equation..how do we do that?

Answer 6

@nelsonjedi

Answer 7

sorry I had to leave for a minute were having guest over and I needed to help clean the house real quick. @nelsonjedi

Answer 8

@Nnesha can you help?

Answer 9

@mathstudent55 @Michele_Laino @SamsungFanBoy @TheSmartOne @triciaal mind helping anyone?

Answer 10

...the first step is to add subtract 3 from both sides and you get X^2+10x= -3 the set up the equation to complete the square

x^2+10x+ c = -3 + c c= (1/2(b))^2 where b=10 So what would c be?

Answer 11

mmm idk?

Answer 12

Take 1/2 of 10 then square it...that is your c value..that is how you complete the square by taking 1/2 of b and squaring it then adding it to both sides

Answer 13

a hah so 25?

Answer 14

is this going to be a postive ora negative outcome?

Answer 15

nvm I got it ... thanks

Answer 16

sorry disconnect...so now you have X^2+10X+25 = -3+25

Answer 17

thank you I passed.

Answer 18

and indeed I faced similar troubles with the OS system too @nelsonjedi

Answer 19

Very good glad I could help