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Solve the quadratic equation by factoring. x2 = -3x + 18
The answer x2 = -3x + 18 is x = -6
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Expert answered|jeifunk|Points 9681|
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Asked 5/13/2013 12:44:58 PM
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Weegy: 5x2 + x - 1 = 0 So a = 5, b = 1, c = -1 Using x = (-b +/- sqrt (b^2-4ac))/2a x = (-1 +/- sqrt (1^2 - 4 * 5 * -1))/ 2 * 5 x = (-1 +/- sqrt (21))/10 x = {-1- v21 over 10, -1 + v21 over 10} rugmaker|Points 3034| Weegy: What is your question? (More)
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Solve the quadratic equation by the square root property. 8x2 + 5 = 805 Here are the 4 multiple choices: {-11, 11}, {-10, 10}, {10}, {402.5} Please show the steps on how you came up with your answer. Thank you!
Question
Updated 8/12/2014 3:02:25 AM
1 Answer/Comment
8x^2 + 5 = 805
8x^2 = 805 - 5 = 800
x^2 = 800/8 = 100
x = 10 or -10
Added 8/12/2014 3:02:25 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [8/12/2014 2:50:37 PM]
Solve the quadratic equation by the square root property. (2x - 1)2 = 25 Here are the 4 multiple choices: {-6, 4}, {-4, 6}, {-2, 3}, {-3, 2} Please show the steps on how you came up with your answer. Thank you!
Weegy: 2x - 2 = 18 is equal to X=10 Solution: 2x-2=18 2X=18+2 2X=20 X=20/2 X=10 User: It has to be one of the multiple choices (More)
Question
Expert Answered
Updated 9/21/2014 6:16:36 AM
1 Answer/Comment
(2x - 1)^2 = 25
2x - 1 = ± 5
when 2x - 1 = 5 , x = 3
when 2x - 1 = -5, x = -2
So {-2, 3} is the answer for (2x - 1)^2 = 25 .
Added 9/21/2014 6:16:36 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [9/21/2014 10:26:35 AM], Rated good by andrewpallarca
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