how would u solve this X2+10x-3=15 by completing the square?

lexihope

how would u solve this X2+10x-3=15 by completing the square?

please help! the 2 after the x is supposed to b an exponent.

This open post was written 4 months, 2 weeks ago | V/U/S: 204, 8, 1 | Edit Post | Leave a reply | Report Post

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Arkia Valkair 8 #
An Unknown Location | 4 months, 2 weeks ago (4 minutes after post)

(x^2 + 10x) - 3 = 15
(x^2 + 10x + 25) - 3 = -10
(x + 5)^2 - 3 = -10
…
Are you sure you’re suppose to solve the equation? You usually don’t use complete the square to do that.

lexihope 1 #
An Unknown Location | 4 months, 2 weeks ago (5 minutes after post)

idk it says complete the square. thats all it says! lol and its not even my hw lol

Help me with: someday I will….

lexihope 1 #
An Unknown Location | 4 months, 2 weeks ago (10 minutes after post)

Arkia Valkair wrote:
(x^2 + 10x) - 3 = 15
(x^2 + 10x + 25) - 3 = -10
(x + 5)^2 - 3 = -10
…
Are you sure you’re suppose to solve the equation? You usually don’t use complete the square to do that.

where did u get = -10 from?

Help me with: someday I will….

Arkia Valkair 8 #
An Unknown Location | 4 months, 2 weeks ago (12 minutes after post)

lexihope wrote:

Arkia Valkair wrote:
(x^2 + 10x) - 3 = 15
(x^2 + 10x + 25) - 3 = -10
(x + 5)^2 - 3 = -10
…
Are you sure you’re suppose to solve the equation? You usually don’t use complete the square to do that.

where did u get = -10 from?

Hmm, nvm. It should be 40. Gah I keep doing stupid things like that :\

lexihope 1 #
An Unknown Location | 4 months, 2 weeks ago (12 minutes after post)

oh okay :]]] good i was getting confused

Help me with: someday I will….

lexihope 1 #
An Unknown Location | 4 months, 2 weeks ago (19 minutes after post)

kk sorry to bug u… promis its the last time :) so once the equation is equal to 40, am i supposed to subract 3 from 40? sooo sorry its the last thing :)

Help me with: someday I will….

Arkia Valkair 8 #
An Unknown Location | 4 months, 2 weeks ago (26 minutes after post)

lexihope wrote:
kk sorry to bug u… promis its the last time :) so once the equation is equal to 40, am i supposed to subract 3 from 40? sooo sorry its the last thing :)

You would be adding 3 actually, if you did that step. To be honest I don’t know where it’s suppose to go from there. Technically I completed the square and since it’s not even your homework in the first place I wouldn’t be too concerned, especially since it’s math homework. From my experience math homework isn’t about getting everything right so much as it’s about practicing what was taught and figuring out what you’re confused about so you can ask questions the next day.

lexihope 1 #
An Unknown Location | 4 months, 2 weeks ago (29 minutes after post)

oh okay thanks :]]]

Help me with: someday I will….

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