SOLUTION: Is this trinomial a perfect square? x� - 6x - 9 Please show work as to how it is or isn't. I asked this question last week but work wasn't shown. I need it explained to me so I c

Question 173323: Is this trinomial a perfect square?
x� - 6x - 9
Please show work as to how it is or isn't. I asked this question last week but work wasn't shown. I need it explained to me so I can understand. PLEASE HELP!!
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
No, it is guaranteed NOT to be a perfect square because the coefficient on the constant term is negative. Perfect square trinomials ALWAYS have a positive constant term.

See?
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