Mathematics
If x = -2 is one of the solutions of the quadratic equation x2 + 3a - x = 0, then the value of 'a' is :
-8
-2
Quadratic Equations
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Answer
Given,
x = -2 is one of the solutions of the quadratic equation x2 + 3a - x = 0.
∴ (-2)2 + 3a - (-2) = 0
⇒ 4 + 3a + 2 = 0
⇒ 3a + 6 = 0
⇒ 3a = -6
⇒ a = = -2.
Hence, Option 2 is the correct option.
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