SOLUTION: X2(squared)-4x+18=0

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Question 753476: X2(squared)-4x+18=0
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+x%5E2+-+4x+%2B+18+=+0+
complete the square
+x%5E2+-+4x+=+-18+
+x%5E2+-+4x+%2B+%28+-4%2F2+%29%5E2+=+-18+%2B+%28+-4%2F2+%29%5E2+
+x%5E2+-+4x+%2B+4+=+-18+%2B+4+
+x%5E2+-+4x+%2B+4+=+-14+
+%28+x+-+2+%29%5E2+=+-14+
+x+-+2+=+sqrt%28+-14+%29+
+x+-+2+=+sqrt%28+14+%29%2Ai+
+x+=+2+%2B+sqrt%28+14+%29%2Ai+
and
+x+=+2+-+sqrt%28+14+%29%2Ai+