SOLUTION: The square of a negative number is fifty-four more than three times the negative number. Find the number.

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Question 1128859: The square of a negative number is fifty-four more than three times the negative number. Find the number.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+%28-x+%29%5E2+=+3%2A%28+-x+%29+%2B+54+
+x%5E2+%2B+3x+-+54+=+0+
+%28+x+%2B+9+%29%2A%28+x+-+6+%29+=+0+
+x+=+6+ and
+-x+=+-6+
The negative number is -6
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check answer:
+%28-6+%29%5E2+=+3%2A%28-6%29+%2B+54+
+36+=+-18+%2B+54+
+54+=+54+