Question

If (2x-2)(2-x)=0 , what are all the possible values of x?
A. 0 only
B. 1 only
C. 2 only
D 1 and 2 only
E. 0, 1 and 2

Answer 1

2x^2 - 2x+4=0 and Discriminant ( x= -1 or x = 4 ) ???

Answer 2

Okay, if you've got a product of two things that equals 0, you know that one or both of them must also equal 0, because multiplying by 0 is the only way to get 0 in a multiplication.

(2x-2) = 0
2x = 2
x = 1

(2-x) = 0
2 = x

So x can have the values 1 and 2 only to make this equation true.

Answer 3

0 is included in your answer list as a red herring. We can that it does not satisfy the equation:

(2(0)-2)(2-0) = 0
(-2)(2) = 0
-4 = 0
Nope!

Answer 4

:) yeees thank you very much :)))

Answer 5

\[(2x-2)(2-x) = 2x(2-x) - 2(2-x) = 4x - 2x^2 -4 -(-2x) =\]\[ -2x^2 + 8x - 4\]

Answer 6

oops yeah :))

Answer 7

Everyone makes mistakes. Well, I don't. I never make misteaks ;-)

Answer 8

hahah good for you :)))