Question

Evaluate 2x − y − z when x = −2, y = 3, and z = −2

Answer 1

Substitute.\[2(-2)-(3)-(-2)=-4-3+2=\]

Answer 2

with this one you want to put the variables in place for example
2 ( -2) - 3
do you see what I started

Answer 3

yeah

Answer 4

can you show me the finished problem by placing them in

Answer 5

ireally don't know how to do that

Answer 6

okay
\[2(-2) - 3 - (-2)\]

Answer 7

that is what it will look like now where do you think we should start

Answer 8

2-2

Answer 9

that is 2 * -2

Answer 10

so 2 * -2 = -4

Answer 11

so then we have
-4 - 3 - (-2)

Answer 12

hmm

Answer 13

but you can change the end into and addition problem because of the two negative signs do that would make it
-4 - 3 + 2

Answer 14

so what is -4 -3

Answer 15

yeah

Answer 16

yeah what?

Answer 17

what is -4 - 3 =

Answer 18

-7