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}
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Asked 5/11/2013 8:48:54 AM

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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. **Weegy:** I apologize for the confusion, but can you please state your question again? Thanks. **User:** Can someone please help me solve the correct answer? Please choose the correct answer from the multiple choices. Please ignore the question mark, for some reason it keeps changing from another symbol to a question mark when I hit enter. Find all numbers that must be excluded from the domain of the rational expression. x + 2 over x² - 64. Here are the multiple choices: 1) x ? -2, 2) x ? 8 x ? -8, 3) x ? 64, 4) x ? 8. The answer that an expert gave me was this answer: **Weegy:** 1) x ? -2, 2
Expert answered|FedelisMVP|Points 136|
If this is the correct answer, I just want to know how he came up with this answer and can someone show me the steps?
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Expert Answered

Asked 5/4/2013 9:58:33 AM

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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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Asked 5/7/2013 4:29:25 PM

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Find the product.
(x - 16)2.
Here are the four multiple choices:
x2 - 32x + 256,
256x2 - 32x + 256,
x + 256,
x2 + 256
**Weegy:** (x-16)^2
= (x-16)(x-16)
= x^2-16x-16x+256
= x^2-32x+256 (More)

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Asked 5/7/2013 4:55:11 PM

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Solve the quadratic equation by factoring. x2 = -3x + 18 **Weegy:** The answer x2 = -3x + 18 is x = -6 (More)

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Asked 5/13/2013 12:44:58 PM

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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

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8x^2 + 5 = 805

8x^2 = 805 - 5 = 800

x^2 = 800/8 = 100

x = 10 or -10

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]

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