SOLUTION: If one root of the equation 2x2 + 3x � k = 0 is 6, what is the value of k? (A) 90 (B) 42 (C) 18 (D) 10 (E) �10

SOLUTION: If one root of the equation 2x2 + 3x � k = 0 is 6, what is the value of k? (A) 90 (B) 42 (C) 18 (D) 10 (E) �10

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Question 3424: If one root of the equation 2x2 + 3x � k = 0 is 6, what is the value of k?
(A) 90
(B) 42
(C) 18
(D) 10
(E) �10

Answer by davidananikian(2) (Show Source): You can put this solution on YOUR website!
If one root of the equation 2x2 + 3x � k = 0 is 6, what is the value of k?
Find k: substitute x=6
2*6^2+3*6-k=0
90-k=0
k=90

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