Solve by completing the square.
x2 – 3x – 5 = 0
Hint
Answer
3x2 + 6x + 3 = 0
(x + 1)2 = 0
x = -1
x2 + 2x – 3 = 0
(x + 1)2 = 4
x = 1 and x = -3
and
x2 + 7x – 1 = 0
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