Answer:
Question #3: Answer = 31
Step-by-step explanation
• Plug in 3 for x
• Plug in -4 for y
| -3(3)² + 2(-4) | -(3)(-4)
From here, simplify. Don't forget to use PEMDAS!
| -27 +8 | + 12
| -19 | + 12
19 + 12
31
Use this same method to solve for Question #2!
Answer:
my brain says (c) or (b) so, my answer would be (C)
Step-by-step explanation:
Answer:
Step-by-step explanation:
We have the product of 2 complex numbers
We know that:
Then we substitute these values in the expression
The product of a complex number by its conjugate is always equal to:
Then
Remember that:
So
Finally
Answer:
variables
Step-by-step explanation:
Given function:
<em><u>This means:</u></em>
- to find what x and y means
<u><em>x and y:</em></u>
- x and y can be anything..its just variables.
- for this equation x can be 1 and y can be 1 also..
- 2·1=2-1=1
Therefore, x and y both equals to 1 and x and y are both variables.