There are two ways to work this out: normal variables or using "imaginary" numbers.
Normal variables:
Imaginary numbers:
Using the result from earlier:
Now since
, then the expression becomes:
Answer:
-9
Step-by-step explanation:
why not
F(x) =-5x+9
f(x) =-5(15)+9
f(x) =- 75+9
f(x)=-66
your answer is -66 :)
Answer:
d i think
Step-by-step explanation:
Answer:
2.75
Step-by-step explanation: