Question

Complete the square to solve the quadratic equation
x^2-7x+12=0
I have the answer but its saying its 3,4
i got x=7/2±√1/4

Answer 1

@yomamabf We have
here
\[x^2-7x+12=0\]
OK tell me How did you do this problem?

Answer 2

This is a complete the square method so I
did 7/2 times 7/2 i followed all the directions i got it but the only problem is why it came up as 3,4

Answer 3

You have done right, Let's try that again
\[x^2-7x+12+\frac{49}{4}-\frac{49}{4}=0\]
What did you next?

Answer 4

12 goes on the other side as -12 and added to 49/4 which comes out as 1/4
then it looks like x=7/2±√1/4

Answer 5

why is it 3,4

Answer 6

Oh you have the answer in front of you:)
What's the value of this
\[\sqrt{\frac{1}{4}}=\frac{1}{\sqrt 4}=????\]

Answer 7

? what ......

Answer 8

are you sure you know what you're doing

Answer 9

nvm dude omfg i got it i watched a youtube video omfg

Answer 10

Yeah
\[\sqrt{\frac{1}{4}}=\frac{1}{2}\]
so
\[x=\frac{7}{2}\pm \sqrt{\frac{1}{4}}=\underline{\frac{7}{2}\pm \frac{1}{2}}\]
Try simplifying the underlined part

Answer 11

@yomamabf did you understand?

Answer 12

i already had that answer..... i needed to know why the answer was 3,4

Answer 13

Yeah you just had to simplify it:)

Answer 14

dude.............. fail