Question

What is the value of 12−2x−3y5

1
2
-
2
x
-
3
y
5
for x = 2 and y = –4?

Answer 1

The value of the expression 12-2x-3y for x = 2 and y = -4 is 20. This is found by substituting the values into the expression and simplifying.

Step-by-step explanation:

The student has asked for the value of the expression 12-2x-3y when x = 2 and y = -4. To solve this, we substitute the given values of x and y into the expression:

12 - 2(2) - 3(-4)

= 12 - 4 + 12

= 8 + 12

= 20.

Therefore, the value of the expression when x = 2 and y = -4 is 20.

Answer 2

For this case we have the following expression:

`12-2x-3y^5`

If
`x = 2`

`y = -4`

We substitute the values in the given expression:

`12-2 (2) -3 (-4) ^ 5 =`

We solve the operations that are inside the parentheses:

Applying law of power and law of signs we have:

`12-4-3 ((- 4) (- 4) (- 4) (- 4) (- 4)) =`

Simplifying the operation within parentheses:

`12-4-3 (-1024) =`

Multiplying:

`12-4 + 3072 =`

Adding algebraically we have:

`12-4 + 3072 = 3080`

Answer:

The value of
`12-2x-3y^5` for
`x = 2` and
`y = -4` is 3080.