pls solve this problem
without calculating the square root of the following number show that the following number are not perfect square
1. 29
2. 101
3. 66
4. 199
5. 74
6. 55
7. 430
useless answer will be reported
Answers
Answer:
all perfect squares are of the form 4n or 4n +1. Use this conjugate to find which is a perfect square or not
Answer
1. What is the last number of 29? It is this number: 29. The answer is 9. Is 9 in the list of numbers that are never perfect squares (2, 3, 7 or 8)?
Answer: NO, 9 is not in the list of numbers that are never perfect squares. Let's continue to the next step.
Step 2:
We now need to obtain the digital root of the number. Here's how you do it:
Split the number up and add each digit together:
2 + 9 = 11
If the answer is more than one digit, you would add each digit of the answer together again:
1 + 1 = 2
What is the digital root of number 29?
Answer: 2
Step 3:
So now we know the digital root of 29 is 2. Is 2 in the list of digital roots that are always a square root (1, 4, 7 or 9)?
Answer: NO, 2 is not in the list of digital roots that are always perfect squares. We can conclude that 29 IS NOT a perfect square and we don't need to factor!
2.101 has only 1 zero
3.it is ending with 6
4 and 5 like no. 1
6.it is ending with 5
7.it has 1 zero
Step-by-step explanation: