Question and answer
Solve the quadratic equation x2 + 16x = -64 by factoring.
Question
Asked 6/4/2013 4:20:59 PM
Updated 8/19/2014 1:19:05 AM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [8/19/2014 1:18:31 AM]
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User: Solve the quadratic equation x2 + 16x = -64 by factoring.

Weegy: The answer for x2 + 16x = -64 is x = -8.
jeifunk|Points 9870|

User: Solve the quadratic equation 5x2 - 125 = 0.





Weegy: The answer is (x+8) (x+8).
Expert answered|nami008|Points 61|

Question
Asked 6/4/2013 4:20:59 PM
Updated 8/19/2014 1:19:05 AM
1 Answer/Comment
This conversation has been flagged as incorrect.
Flagged by yeswey [8/19/2014 1:18:31 AM]
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8
5x^2 - 125 = 0
5(x^2 - 25) = 0
5(x + 5)(x - 5) = 0
x = -5 or x = 5
Added 8/19/2014 1:19:05 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [8/19/2014 1:22:27 AM]
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Questions asked by the same visitor
Factor x2 - x - 90 = 0.
Weegy: x2 - x - 90 = 0 in factored form is (x-10)(x+9)=0 (More)
Question
Expert Answered
Asked 6/4/2013 4:17:19 PM
0 Answers/Comments
Factor the trinomial: x2 + 3x - 40
Weegy: (3x-2) squared is 9x^2 - 12x + 4. User: If f(x) = 2x and g(x) = 5x, calculate f(g(x)). Weegy: D. 5x - 4 is the answer. User: Express The square root of negative 12. in i notation. User: Solve by completing the square: x2 + 8x = -3. User: Simplify y-4 y 2 -16 User: Evaluate 64 to the one third power. User: Simplify 8-2 by making the exponent positive. Weegy: 8^-2 = 1/(8^2) = 1/64 User: Simplify y-2 by making the exponent positive User: Evaluate 125 to the one third power User: Simplify x-5 by making the exponent positive. (More)
Question
Updated 6/22/2014 4:44:42 AM
5 Answers/Comments
x^2 + 3x - 40 = (x - 5)(x + 8)

Added 6/22/2014 4:40:48 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/23/2014 1:18:46 PM]
f(x) = 2x and g(x) = 5x,
f(g(x)) = f(5x) = 2(5x) = 10x
Added 6/22/2014 4:41:35 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/23/2014 1:19:05 PM]
x^2 + 8x = -3
x^2 + 8x + 16 = -3 + 16
(x + 4)^2 = 13
x + 4 = ± sqrt 13
x = -4 ± sqrt 13
Added 6/22/2014 4:43:42 AM
This answer has been confirmed as correct and helpful.
Confirmed by andrewpallarca [6/23/2014 1:19:34 PM]
64 to the one third power is 4.
Added 6/22/2014 4:44:42 AM
This answer has been confirmed as correct and helpful.
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