SOLUTION: I need help Multiplying and Dividing Rational Expressions from Alegbra 2. Simplying. Identify any x-values for which the expression is undefined: 1.) 4x^2 2.) x+4

Question 466244: I need help Multiplying and Dividing Rational Expressions from Alegbra 2.
Simplying. Identify any x-values for which the expression is undefined:
1.) 4x^2 2.) x+4 3.) 6x^2+7x-3
----- -------- ---------
2x-6 3x^2+11-4 -3^2+x
Multiplying. Assume that all experessions are defined.
1.) x-2 4x-6 2.) x^2-16 x-2
---- X ---- -------- X --------
2x-3 x^2-4 x^2-4x=4 x^2+6x+8
Dividing. Assume that all expressions are defined
Another thing, is there some kind of system where I can put symbols for dividing, multiplying, & a line where there's a equation that has a line in between, for example, 4
---
2

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Simplying. Identify any x-values for which the expression is undefined:
1.) 4x^2 2.) x+4 3.) 6x^2+7x-3
----- -------- ---------
2x-6 3x^2+11x-4 -3^2+x
-----
Note: The denominators cannot be zero.
1. x cannot be 3
2. Factors are (3x-1)(x+4); x cannot be 1/3 ; x cannot be -4
3. x cannot be 9
-------------------------------------------------------------------
Multiplying. Assume that all expreessions are defined.
1.) x-2 4x-6 2.) x^2-16 x-2
---- X ---- -------- X --------
2x-3 x^2-4 x^2-4x=4 x^2+6x+8
----------------------------------------------------------
1. Factor where you can:
[(x-2)/(2x-3)]
---
Cancel factors common to a numerator and a denominator:
[1/(2x-3)]
----
= [2(x-3)]/[(2x-3)(x+2)]
=============================================
etc.
===================
Cheers,
Stan H.
=====================
Dividing. Assume that all expressions are defined
Another thing, is there some kind of system where I can put symbols for dividing, multiplying, & a line where there's a equation that has a line in between, for example, 4
---
----
Just use 4/2

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