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(52851)   (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: