SOLUTION:
Find the missing root and solve for k: 2x^2 - 12x + k = 0; r1 = 3 + square root of 2
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Question 175025:
Find the missing root and solve for k: 2x^2 - 12x + k = 0; r1 = 3 + square root of 2
Found 2 solutions by ankor@dixie-net.com, josmiceli:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Find the missing root and solve for k:
2x^2 - 12x + k = 0;
r1 = 3 +
r2 = 3 -
:
Find k:
x = 3 +
x - 3 =
square both sides
(x-3)^2 = ()^2
:
x^2 - 6x + 9 = 2
:
x^2 - 6x + 9 - 2 = 0
:
x^2 - 6x + 7 = 0
:
I left a step out here
2(x^2 - 6x + 7) = 2x - 12x + 14; the original equation
therefore
k = 14
:
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
given:
the missing root
------------------------
The equation is
check:
OK
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