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36 dived by 9 is 4 so with 4 yards of material she can make one quilt. 13 x 4 is 52 so the answer is 52
The equation in undefined when the denominator is equal to 0.
The denominator is (x+5) (x+11)
Solve for the x's to make the equations equal 0:
x+5 = 0
Subtract 5 from each side:
x =-5
x+11 = 0
Subtract 11 from each side:
X = -11
There are two answers -5 and -11.