sqrt root with a fraction
Like this \( \color{eneter color name}{1/2 ~ √40 } \)
You need to simplify?
yea
What are the factors of 40?
*prime
factors:1,2,4,5,8,10,20,40,
Do you know how to do prime factorization?
ofc i do
Can you find the prime factors of 40?
oh factors
wait were you askin if 40 is prima.. it's not prime ;3 2^3 • 5
Right, the factors are: 2*2*2*5
We can simplify √40 by taking the two 2's out: 2√10
I assume you mean:\[\frac{ 1 }{ 2\sqrt{40} }\]... our job is to get that radical out of the denominator. The trick here is to identify the largest perfect square factor of 40. It's not 2, not 5, not 8, etc. Why? Find the largest perfect square factor of 40. What's left? sqrt(10). To get this sqrt(10) out of the denom., multiply numerator and den. of your fraction by sqrt (10) and simplify your result.
No i mean this|dw:1460517969850:dw|
Your den. will no longer have a radical (square root sign) in it.
The square root of 40 simplifies to this: 2√10 The next step is to multiply by 1/2
|dw:1460518027591:dw|
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