Question

The equation 2x² +Kx +3=0

1. ±√6

2. ±4

3. ±3√2

4. ±2√6

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Answer 1

Answer:

thanks for free points

Answer 2

±2√6 this is correct ans dear

solution:

comparing equation with ax² + bx + c = 0

a= 2, b = k, c=3

since, the equation has two equal roots,

D=0

b² - 4ac = 0

putting values

k² - 4 x 2 x 3 = 0

k² - 24 = 0

k² = 24

k = +√ 24 = ±2√6