![SmokeyRN](/avatars/5826.jpg)
SmokeyRN
17.05.2021 •
Mathematics
√125x^4y^2
simplify square roots
Solved
Show answers
More tips
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- C Computers and Internet How to Learn to Type Fast?...
- F Food and Cooking Delight for Gourmets: How to Prepare Liver Pate...
- S Style and Beauty How to braid friendship bracelets?...
- H Health and Medicine Mercury Thermometer Danger: What to do when a thermometer breaks?...
- F Food and Cooking Which Calamari Salad is the Most Delicious?...
- S Society and Politics 10 Tips for Boosting Your Self-Esteem...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- H Health and Medicine What is Autism? Understanding the Basics of This Neurodevelopmental Disorder...
- P Philosophy How to Develop Extrasensory Abilities?...
Answers on questions: Mathematics
- M Mathematics Drag each tile to the correct box. Not all tiles will be used. Find the tables wDrag each tile to the correct box. Not all tiles will be used. Find the tables with unit rates greater...
- M Mathematics Lin has a small baking pans shaped like a rectangular prism. Lin’s pan has a length of 223 inches, a width of 334 inches, and a height of 112 inches. What is the volume of this pan?...
- M Mathematics 13+[8×16-(24+5×b)÷2]÷3-45=0...
- M Mathematics Please help timed :( 30points...
- M Mathematics Help plz ASAP 150% as a fraction or mixed number...
Ответ:
5 x2 • sqrt(5y)
Step-by-step explanation:
Factor 125 into its prime factors
125 = 53
To simplify a square root, we extract factors which are squares, i.e., factors that are raised to an even exponent.
Factors which will be extracted are :
25 = 52
Factors which will remain inside the root are :
5 = 5
To complete this part of the simplification we take the squre root of the factors which are to be extracted. We do this by dividing their exponents by 2 :
5 = 5
At the end of this step the partly simplified SQRT looks like this:
5 • sqrt (5x4y)
STEP
2
:
Simplify the Variable part of the SQRT
Rules for simplifing variables which may be raised to a power:
(1) variables with no exponent stay inside the radical
(2) variables raised to power 1 or (-1) stay inside the radical
(3) variables raised to an even exponent: Half the exponent taken out, nothing remains inside the radical. examples:
(3.1) sqrt(x8)=x4
(3.2) sqrt(x-6)=x-3
(4) variables raised to an odd exponent which is >2 or <(-2) , examples:
(4.1) sqrt(x5)=x2•sqrt(x)
(4.2) sqrt(x-7)=x-3•sqrt(x-1)
Applying these rules to our case we find out that
SQRT(x4y) = x2 • SQRT(y)
Combine both simplifications
sqrt (125x4y) =
5 x2 • sqrt(5y)
Simplified Root :
5 x2 • sqrt(5y)
Ответ:
x^2+x-2=0
factor: (x-1)(x+2)=0
x=1, or x=-2