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Question

State true or false:
If x=4 is the solution of the equation 3x2+kx−2=0, then the value of k=−232.

A
True
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B
False
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Solution

The correct option is A True
Putting x=4 in the given equation 3x2+kx2=0, we get
3(4)2+k(4)2=0
48+4k2=0
4k=46
k=232

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