Question

(2) If one root of the quadratic equation 2x2 + kx - 6 = 0 and root is - 4, find the value of k. Also find the other root.​

Answer 1

Answer:

Substitute the root -4 in the place of x,

2x2 + kx - 6 = 0

2(-4) 2 + k(-4) - 6 = 0

2(16) + (-4k ) - 6 = 0

32 - 4k - 6 = 0

32 - 6 = + 4k

26 = 4k

26/4 = k

6.5 = k

Step-by-step explanation:

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