Answer:
2√21
Step-by-step explanation:
1) Simplify.
√84
2) Simplify √84 to 2√21.
2√21
It is 27 you add 10 and 27 which equals 27.
Answer:
㏑(
)
solution
log10 (
steps 
simplify log 10(b7) : 7log10 (b)
= 
Answer: look at the picture
Step-by-step explanation: Hope this help :)