Question

Solve for x: (2x - 4)2 = 1
A. 2, 3
B. 3/2, 5/2
C. 3/2, 3/5
D. 3/2, -5/2

Answer 1

first you disturb the 2

Answer 2

or is it squared?? @cenaida

Answer 3

its squared

Answer 4

actually

\[| 2x-4 | = 1\]

Answer 5

i would do (2x-4)(2x-4)=1 so you have 2 answers for x

Answer 6

so 4x^2-8x-8x+16

Answer 7

\[| 2x-4 | = 1\]\[ 2x-4 = -1~~~~~~~~~and~~~~~~~~ 2x-4 = 1\]\[2x=3~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~2x=5\]\[x=3/2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~x=5/2\]

Answer 8

it's B

Answer 9

Where did I get \[ | 2x-4 |=1\]LOOK.
\[(2x-4)^2=1\]\[(2x-4)^2=1^2\]square both sides, the square is +- or an absolute value.

Answer 10

I am sorry, but i suck at explaining, even teachers barely get my work....

Answer 11

ok so its positive thank you

Answer 12

Yes, it's positive.
x= 3/2 and 5/2


See how I did it?