Question

3.3.4√20+5-43 calculate ​

Answer 1

Here are the steps to calculate the expression √20 + 5 - 43 :

Step 1: Simplify the square root of 20:

`√(20)`

Step 2: Calculate the value of the square root:

`√(20) = 2√(5)`

Step 3: Substitute the value of the square root into the expression:

`2√(5) + 5 - 43`

Step 4: Perform addition:

`2√(5) + 5 = 2√(5) + (5)/(1) = (2√(5) + 5)/(1)`

Step 5: Perform subtraction:

`(2√(5) + 5)/(1) - 43 = (2√(5) + 5 - 43)/(1)`

Step 6: Simplify the numerator:

`(2√(5) - 38)/(1)`

Step 7: Simplify the expression:

`2√(5) - 38`

Therefore, the calculation √20 + 5 - 43 simplifies to 2√5 - 38.