SOLUTION: Find every value for the variable that makes the expression undefined x^2-36 over x^2+11x+28

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Question 1006634: Find every value for the variable that makes the expression undefined
x^2-36 over x^2+11x+28
Found 2 solutions by MathLover1, MathTherapy:
Answer by MathLover1(20849)   (Show Source): You can put this solution on YOUR website!


A fraction is said to be (or have no meaning) when the .
..........solve for





solutions:



or



the values and for the variable will make the expression undefined


Answer by MathTherapy(10551)   (Show Source): You can put this solution on YOUR website!

Find every value for the variable that makes the expression undefined
x^2-36 over x^2+11x+28
Set denominator equal to 0



(x + 7)(x  + 4) = 0 ------- Factoring trinomial

x = - 7     OR      x = - 4 ------- Solving for x, after setting each factor equal to 0

Expression is undefined when:  

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