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

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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

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)

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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 .

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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