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justinee
Group Title
Can someone check this for me? (completing the square)
 one year ago
 one year ago
justinee Group Title
Can someone check this for me? (completing the square)
 one year ago
 one year ago

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justinee Group TitleBest ResponseYou've already chosen the best response.0
y = 2x^2  20x  48
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
then i rewrote that into: y = 2(x^2  20x ____) 48 20/2 = 10 then square it and I got 100 y = 2(x^2  20x +100) 48
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
then I added 100 to both sides and I got: y + 100= 2(x  10)^2 48 100 100  y = 2(x  10)^2  148
 one year ago

halorazer Group TitleBest ResponseYou've already chosen the best response.0
You subtracted 100 though ^
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
you add 48 to the other side and then also the 100 and the quadratic = 148
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
then you can factor the left side
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
can you show me that in steps? like from the beginning
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
you did it rite just set the equation = 0 then subtract 49 from both sides so 2x^220x=48
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
then complete the square and add the 100 to both sides
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
so it'd be 0 = 2(x^2  20x + 100) 48 ?
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
why do I need to factor that
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
Ok I got it thanks! and one more question
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
How would I solve: x^2  38x + c also by completing the square
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
c is a constant most likely just move it to the other side and complete the square
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
what is that going to give me?
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
and what would be the next step
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
0 = (x2  38x ___) +c ?
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
square the 38 and do the same to both sides
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
(x^238x+__)=__c
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
38/2 = 19^2 = 361
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
so that is on both sides
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
(x^238x+361)=361c
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
okay so far i have: (x^2  38x + 361) = 361 c
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
right now you should be able to factor the quadratic which is the point of completing the square
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
so like: ____ x___ = 361 ____+___= 38
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
right it will be the same number it is squared
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
(x19)^2 = 361  c?
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
and the first equation was x^210+25=49
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
what do I do now?
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
with the second you can't do anything it is most likely to show how you did the work
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
so just that ^
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
how would i write tht in intercept form
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
do you mean y=mx+b
 one year ago

justinee Group TitleBest ResponseYou've already chosen the best response.0
no I also have to rewrite tht in intercept
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
the x intercept is +or(7/5,0)
 one year ago

Decart Group TitleBest ResponseYou've already chosen the best response.1
that is the y is 0
 one year ago
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