Mathematics
One root of equation 3x2 - mx + 4 = 0 is 1, the value of m is :
7
-7
Quadratic Equations
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Answer
Since, 1 is the root of equation 3x2 - mx + 4 = 0.
∴ x = 1, will satisfy the equation 3x2 - mx + 4 = 0.
⇒ 3(1)2 - m(1) + 4 = 0
⇒ 3 - m + 4 = 0
⇒ 7 - m = 0
⇒ m = 7.
Hence, Option 1 is the correct option.
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