Answer:
81x^4+216x^3+216x^2+96x+16
Step-by-step explanation:
The first step of simplifying the expression would be summing up the "i"s. They are separate ("+i" and "+5i") but you can still sum them up though they are apart. This is thanks to the commutative property of addition which allows summing the terms of an expression with several additions in whatever order it is prefered. Commutative means that the terms can be interchangeable.
Answer:
C
Step-by-step explanation:
I know because I know that how
Here are your examples
A spring that is bouncing up and down.
An atom or molecule that resonates with a certain frequency.
In fact, anything that resonates: a violin string, a pendulum, the air column in a muffler,.....
