Find the square root of 81: 81−−√ .(1 point)
The square root of 81 is 9.
To find the square root of 81, follow these steps:
Step 1: Start with the number 81.
Step 2: Divide the number by any perfect square that is a factor of 81. In this case, we can divide by 9, which is a perfect square and a factor of 81.
Step 3: Divide 81 by 9 to get 9.
Step 4: Take the square root of the result obtained in step 3. The square root of 9 is 3.
Step 5: Therefore, the square root of 81 is 9.
The square root of 81 is 9.
To find the square root of 81, you can use a calculator or perform it manually.
If you want to solve it manually, you can try the following steps:
1. Make an initial guess: The square root of 81 falls somewhere between 8 and 9, so you can start with a guess of 9.
2. Square the guess: Multiply 9 by itself: 9 * 9 = 81.
3. Check if the guess is too high or too low: Since the result matches the original number (81), the guess is correct.
Therefore, the square root of 81 is 9.
Alternatively, if you use a calculator, you can simply input 81 and use the square root function to get the result, which is also 9.
Find the square root of 100: 100−−−√ .(1 point)
The square root of 100 is 10.
Find the cube root of 512: 512−−−√3 .(1 point)
The cube root of 512 is 8.
Find the cube root of −343
The cube root of -343 is -7.
We can find this by calculating the cube root of the absolute value of -343, which is 343. The cube root of 343 is 7. Since the original number is negative, the cube root of -343 is -7.