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|
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I'm confused with your answer. So are you saying that the first answer is incorrect. I'm confused with the t's. What exactly is the correct answer from the multiple choices given here.
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Find the product. (x - 2)(x + 7). Here are the four multiple choices: x2 + 5x + 5, x2 + 5x – 14, x2 + 4x – 14, x2 - 14x + 5
Weegy: (x - 2)(x + 7) = x^2+7x-2x-14 = x^2+5x-14 (More)
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Weegy: The answer x2 = -3x + 18 is x = -6 (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!
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Updated 8/12/2014 3:02:25 AM
8x^2 + 5 = 805
8x^2 = 805 - 5 = 800
x^2 = 800/8 = 100
x = 10 or -10
Confirmed by andrewpallarca [8/12/2014 2:50:37 PM]
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