Wednesday

October 22, 2014

October 22, 2014

Posted by **Jasmine20** on Friday, January 26, 2007 at 3:47am.

x radiacal 18 -3 radical 8x^2

can someone show me how to do these types of problems. thanks

I cant determine the second term. For the first, I think you meant

x sqrt(18) which reduces to

x sqrt (9*3) or

3x sqrt 3

First remove squares from under the radical sign

x sqrt(18) = x sqrt (9*2) = 3x sqrt 2

and

3 sqrt(8x^2) = 3 sqrt (4*2*x^2)

= 6x sqrt 2

Now combine terms.

x sqrt(18) - 3 sqrt(8x^2)

= sqrt 2*(3x - 6x) = -3x sqrt 2

You can get other possible answers by using the negative square roots. For example

x sqrt(18) = x sqrt (9*2)

= (+ or -) 3x sqrt 2

**Answer this Question**

**Related Questions**

math , help,algebra - i am up to this point in my problem but i don't know what ...

math,correction - Simplify by combining like terms. Problem #32 radical (63) - 2...

math,correction,plz - can someone correct these for me plz. Simplify by ...

math,algebra - I need help if someone can show me the steps to these 2 problems...

math - Can someone show me the steps necessary to simplify the expression by ...

math, algebra,correction - I don't know if this is right. directions: Simplify ...

math,correction - Problem #1 Simplify by combining like terms. x(18) -3(8x^2...

Math - thanks for the answers, but I need to know how to solve the problems, so ...

Math (Pre-Algebra) - How do you simplify this equation by combining like terms ...

algebra - simplify the expression by combining like terms 2x+5x+7+y-3x+4y+2