SOLUTION: Find any value of the variable that make the expression undefined. Problem 1# x^2+8x+15 / x^2+9x+18 Problem 2# 4x+1 / x^2-5x+6

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Question 1004101: Find any value of the variable that make the expression undefined.
Problem 1# x^2+8x+15 / x^2+9x+18
Problem 2# 4x+1 / x^2-5x+6
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52855)   (Show Source): You can put this solution on YOUR website!
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Find any value of the variable that make the expression undefined.
Problem 1# x^2+8x+15 / x^2+9x+18
Problem 2# 4x+1 / x^2-5x+6
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1) .     x = -6 and x =-3  make the denominator equals zero and the ratio indefinite.

2) .     x = 2  and  x = 3  make the same.

You simply need to find zeroes of denominators.



Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!

Find any value of the variable that make the expression undefined.
Problem 1# x^2+8x+15 / x^2+9x+18
Problem 2# 4x+1 / x^2-5x+6


1) Set denominator equal to 0, and determine values for x

2) Values of x will NOT BE PART of the solution set for x, as they will make the expression undefined

3) You should get values that make the expression undefined as:  



Problem 2#  4x+1 / x^2-5x+6



1) Set denominator equal to 0, and determine values for x

2) Values of x will NOT BE PART of the solution set for x, as they will make the expression undefined

3) You should get values that make the expression undefined as:  

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