SOLUTION: how do i solve the equation using the square in h^2-4h-7=0

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Question 313419: how do i solve the equation using the square in h^2-4h-7=0
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
+h%5E2-4h-7=0+
Complete the square:
+h%5E2-4h+=+7+
Add 1/2 'b' squared to both sides:
+h%5E2-4h+%2B4+=+7%2B4+
+h%5E2-4h%2B4+=+11+
Factoring the left:
+%28h-2%29%28h-2%29+=+11+
+%28h-2%29%5E2+=+11+
+h-2+=+sqrt%2811%29+
+h+=+sqrt%2811%29+%2B+2+
+h+=+5.32+