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3 years ago

If x = -1/2 is a solution of the quadratic equation 3x2+2kx-3=0 find the value of k

Mathematics

2 answers:

Masteriza [31]3 years ago

7 0

6+2k(-1/2)-3=0.
6+1k-3=0
3+1k=0
-3
k=-3

Finger [1]3 years ago

4 0

Just substitute for x :)

3(-1/2)2+2k(-1/2)-3=0
-3 + (-1k) -3 = 0
-6 + (-1k) = 0
+6 +6
-1k = 6
/-1 /-1 <u>k = -6 </u> that's what i believe the answer is

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gtnhenbr [62]

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Step-by-step explanation:

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$\sqrt{4} = \sqrt{r^2}$

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