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Find the nonpermissible replacement for a in this expression. A square over -2a +6
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Find the nonpermissible replacement for a in this expression. A square over -2a +6

User Clyfe
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The denominator may not equal 0, so you need to find where -2a+6 = 0.

This happens at a = 3, so 3 is the nonpermissible replacement.
User Mitchell Skurnik
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