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Question
Find, using the quadratic formula, the roots of the following quadratic equations, if they exist
x2 + 4x + 5 = 0
Solution
Given quadratic equation is x2 + 4x + 5 = 0
D = b2 – 4ac
= (4)2 – 4(1)(5)
= 16 – 20
= – 4
Since D < 0, the roots of the given quadratic equation does not exist.
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