Question

2_4÷5+3÷5+6÷3 slove question​

Answer 1

Answer:

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2 is one of the roots of the equation

2x2 + kx – 2 = 0.

∴ Putting x = – 2 in the given equation, we get

2(-2)2 + k(-2) -2 = 0

∴ 8 – 2k – 2 = 0

∴ 6 – 2k = 0

∴ 2k = 6

∴ k = 62

∴ k = 3