Mathematics
If 3 is a root of the quadratic equation x2 - px + 3 = 0 then p is equal to :
4
3
5
2
Quadratic Equations
ICSE 2023
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Answer
Given,
3 is a root of the quadratic equation x2 - px + 3 = 0
∴ 32 - 3p + 3 = 0
⇒ 9 - 3p + 3 = 0
⇒ 12 - 3p = 0
⇒ 3p = 12
⇒ p = = 4.
Hence, Option 1 is the correct option.
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