The answer is all nonzero real numbers. I've had this problem before
Here's the solution :
there are two cases :
Case 1.
Case 2.
these values that is 0 and 6 are roots of the given polynomial.
The answer is in the attachment
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Answer: 
Step-by-step explanation:
1. To solve simplify the expression given in the problem, you must apply a property of exponents called Quotient of powers, which states that when you divide two powers that have the same base, you must subtract the exponents.
2. Keeping this property on mind, you can rewrite the expression as following and simplify:

2 1/5 = when you simplify is 11/5
3 1/2= when you simplify is 7/2
Now, if Miriam want to make 3 1/2 blanket you have to multiply for 2 1/5 that is the amount for 1 blanket. And the result it will be how much fabric Miriam will need to make the 3 1/2 blanket
However, you have to
3 1/2 x 2 1/5 = 7 7/10 if you simplify it will be
7/2 x 11/5 = 77/10
Calculation steps:
7/2 x 11/5 = 7 x 11 / 2 x 5 = 77/10 = 7 7/10
So, Miriam will need 7 7/10 feet of fabric to make 3 1/2 blanket.
Hope that help.