Tuesday

October 21, 2014

October 21, 2014

Posted by **jas20** on Friday, March 23, 2007 at 3:35am.

Problem #1

Use the properties for radicals to simplify each of the following expressions. Assume that all variables represent positive real numbers.

radical and inside of the radical theres a fraction that reads

(12x^3)/(5)

Problem #2

Simplify by combining like terms.

radical 63 minus 2radical 28+5radical 7

On the first, remember that x cubed is x squared times x.

you have a principle that says

sqrt (a^n * a) = a^(n/2) sqrt a

so bring the x squared out as x.

I cant follow the second.

Here is a good way to print radicals:

to get the √ sign, hold down the ALT key while you press 251 on the number pad, then release the ALT key.

I interpret your second question this way:

√63-2√28+5√7

you can only add or subtract like radicals, so in these kind of question they most likely want you to change them all to the same kind of radical.

Look for the lowest radical, usually the others can be changed to that.

hint: isn't 63 = 9*7 and 28=4*7 ???

**Answer this Question**

**Related Questions**

math, correction,plz - can someone correct these for me plz.... Problem#36 Use ...

algebra,math,help - Use Property 2 to simplify each of the following radical ...

math,algebra - Use the five properties of exponents to simplify each of the ...

algebra - multiply and simplify by factoring. Assume that all expressions under ...

Algebra - I need help with this problem: Use the five properties of exponents to...

math.algebra - I need help with this last math problem i have: Using the ...

fractions - my teacher gave us some fraction problems for homework, but I'm ...

math,algebra,correction - Science and medicine. Find the time required for an ...

algebra 1 - Can someone please help me with this inequality problem -3-8>(4x+...

algebra - Can someone show me how to use fractional exponents to solve 5^(1/4)*...