Answer:

Step-by-step explanation:
Apply exponent rule: 

Answer:
Step-by-step explanation:
4.44 i think
26.94 i think
Answer:
the answer is C
Step-by-step explanation:
(g.f)(3)
g(f(3))=g(7)=49
Sometimes
1. The radical expression
![\sqrt[n]{}](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7B%7D%20)
with even n requires <span>a variable with positive quantity. For example, if you have
![\sqrt[4]{x^3}](https://tex.z-dn.net/?f=%20%5Csqrt%5B4%5D%7Bx%5E3%7D%20)
, then always

.
</span>
2. If you have radical expression
![\sqrt[n]{}](https://tex.z-dn.net/?f=%20%5Csqrt%5Bn%5D%7B%7D%20)
with odd n, ia variable may be arbitrary. For example, for
![\sqrt[7]{x}](https://tex.z-dn.net/?f=%20%5Csqrt%5B7%5D%7Bx%7D%20)
you can consider all real x.
X=7
distribute the equation