SOLUTION: If x=-3 is a solution of the equation x^2=6x+do where d is a constant what is another value of x that satisfies the equation?
(Plz show step by step solution)
-5
-9
9
6
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-> SOLUTION: If x=-3 is a solution of the equation x^2=6x+do where d is a constant what is another value of x that satisfies the equation?
(Plz show step by step solution)
-5
-9
9
6
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Question 1119258: If x=-3 is a solution of the equation x^2=6x+do where d is a constant what is another value of x that satisfies the equation?
(Plz show step by step solution)
-5
-9
9
6 Answer by ikleyn(52781) (Show Source):
x^2 = 6x + d ====>
x^2 - 6x - d = 0.
According to Vieta's theorem, the sum of the roots to this equation is equal to the coefficient at x with the opposite sign:
+ = 6 ====>
= 6 - = 6 - (-3) = 9.
Answer. The other root is 9.
