Friday

January 30, 2015

January 30, 2015

Posted by **Emily** on Monday, February 12, 2007 at 8:56am.

You can approximate it or simplify it in terms of (products of) square roots of smaller numbers.

E.g. consider sqrt[117]

The number 177 can be factored:

117 = 9*13

So we have:

sqrt[177] = sqrt[9*13] =

sqrt[9]*sqrt[13] = 3 sqrt[13]

Cases like:

sqrt[a]/sqrt[b]

can be rewritten by multiplying numerator and denominator by sqrt[b]:

sqrt[a]/sqrt[b] =

sqrt[a]*sqrt[b]/(sqrt[b]*sqrt[b]) =

sqrt[a]*sqrt[b]/b

**Answer this Question**

**Related Questions**

College Algebra - I need some help with a handful of questions. I need to see ...

College Algebra - I need some help with a handful of questions. I need to see ...

College Algebra help please - I need some help with a handful of questions. I ...

Algebra - Rationalize each expression by building perfect nth root factors for ...

Math - 1. Rosa, Roberto, Andrea, and Inno find an estimate for square root 10. ...

7th grade math Ms. Sue please - 2. Shelly sews a blanket that has an area of 170...

Math - Which numbers are perfect squares? A) 64 b)900 c)120 d)1000 e)100 F) 10 ...

math - 1. Rosa, Roberto, Andrea, and Inno find an estimate for the square root ...

Math ~CHECK MY ANSWER~ - 1) Which of these is a rational number? a. Pi b. Square...

algebra - 1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3...