yes
Yes, if appropriate.
x264: Without knowing the value of x you cannot evaluate this expression.
Base of a power
power
a4b2
Is is called the exponent.
17 to the 3rd power as a product of the same factor is written 17 x 17 x 17
To evaluate an expression means to find its numerical value. A power consists of a base and an exponent. According to the order of operations, operations inside parentheses (or other grouping symbols) are performed first, followed by the evaluation of powers ... then (*/) and (+-).
4 to the second power
The power is the product between the magnitude of voltage and the magnitude of current. Whereas the power factor is a ratio between the active power and the apparent power.
Power.
Unlike DC in AC Power is the Product of Voltage*Current*Power FactorP = V*I*PFIn the above expression power factor is a variable quantity which can be different for different circuit hance does not allow you to specify ratings in KW rather then KVA.