SOLUTION: Help me with these Quadratic equations using using completing the square method
1)3k^2=8k+8
2)4m^2+10m-5=0
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Question 1160932: Help me with these Quadratic equations using using completing the square method
1)3k^2=8k+8
2)4m^2+10m-5=0
Found 3 solutions by josgarithmetic, saw, ikleyn:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
, the completing the square step
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.
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Answer by saw(34) (Show Source): You can put this solution on YOUR website!
(1) 3k^2 = 8k+8
3k^2-8k-8 = 0
k = 2.828427 or 0.6666667
(2)4m^2+10m-5 = 0
m = 0.427051 or -2.927051
Answer by ikleyn(52781) (Show Source): You can put this solution on YOUR website!
.
The solution to equation (1), given by the person @saw, " k = 2.828427 or 0.6666667 ", is WRONG.
The correct answer/numbers are k = 3.441518 or k = -0.77485.
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Regarding this personage, keep in mind that half of his solutions/answers are incorrect.
And you never know (and can not know), to which half his current and next answer/post/solution does relate.
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