a little confused please help
what is the square root of 160- square root of 20.
sqrt(160) - sqrt(20)
4 sqrt(10)- 2 sqrt(5)
not much more you can do but use a calculator
The calculation is correct, but the meaning is in error.
A square with perimeter 160 is 40x40.
A second problem is that you cannot arrange 20 equal squares into a square, since 20 is not a perfect square. How will you arrange them? A rectangle that is 4x5 will have sides 160x200 with perimeter 640, but it won't be a square.
To solve the expression √160 - √20, we can simplify the radicals and then subtract them.
First, let's find the square root of each number:
√160 = √(16 * 10) = √16 * √10 = 4 * √10
√20 = √(4 * 5) = √4 * √5 = 2 * √5
Now we can substitute these simplified radicals back into the original expression:
√160 - √20 = 4 * √10 - 2 * √5
Since the two radicals have different terms (√10 and √5), we cannot simplify them further. Therefore, this is the simplified form of the expression: 4 * √10 - 2 * √5.
Please let me know if you need any further assistance!