√84= √4•√21= final answer is
±2√21
Answer:
7
Step-by-step explanation:
To solve this, we have to work backwards. If you divide something by 9, and it equals 5, to figure out the number, we need to multiply by 9. 5*9= 45. If four was taken away, we have to add it to 45, which is 49. If a number *7 is 49, then we have to divide by 7 to get the answer. 49/7=7
Answer:
-1, -1.1, 0.9, 1
Step-by-step explanation:
I think it would just be n rad n
