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corbin909
Lv 4
Find the positive value of x that makes the expression x^2 + 9x / x^2 + 6x - 27 undefined? Thanks.?
1 Answer
Relevance
- LizardLoverLv 61 decade ago
when denominator = 0
so solve: x^2+6x-27=0
[x-3][x+9]
rots are x=3 and x=-9
reject -9 because its not positve so answer is x=3
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