Question

Solve x2 - 4x = 12 by completing the square. Please show work.

Answer 1

I have to add 4 to each side i know that so then i get x^2-4x+4=16 then after that i think i need to factor the left side and i get (x-2)^2=16

Answer 2

then i think i need to square root both sides and i get x-2=4

Answer 3

yes

Answer 4

so after this i should add 2 right?

Answer 5

yes

Answer 6

but how do i get 2 answers?

Answer 7

oh

Answer 8

so x=6

Answer 9

x-2=\[\pm4 \]

Answer 10

x-2=4 or x-2=-4

Answer 11

x=6 or x=-2

Answer 12

oh ok so x-2=4 or x-2=-4 then add two to both sides to get x=6 or x=-2?

Answer 13

thanks so much

Answer 14

yes

Answer 15

can you help me on my question lol

Answer 16

i can try