find the value of k for which the roots of the quadratic 2x²+kx+8=0
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Answered by
2
B2-4ac
(k) 2 - 4(2)(8)
K2 - 64
Then do it...
(k) 2 - 4(2)(8)
K2 - 64
Then do it...
Answered by
5
Answer:
Step-by-step explanation:
If the given equation has real roots, a = 2 , b = k and c = 8.
D = 0
b2 - 4ac = 0
k2 - 4 * 2 *8 = 0
k2 = 64
k = ± √64
∴k = ± 8.
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