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anonymous
 one year ago
Find the xintercepts of the parabola with vertex (4,2)and y Intercept (0,30) Wright answer if this form (x1,y1)(x2,y2).
anonymous
 one year ago
Find the xintercepts of the parabola with vertex (4,2)and y Intercept (0,30) Wright answer if this form (x1,y1)(x2,y2).

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i would also like to know how you did it

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3what's the vertex form of the parabola ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Bruh... okay here: http://openstudy.com/study#/updates/4fe123c7e4b06e92b8705343

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3hmm add k both sides so it would be \[\huge\rm y=a(xh)^2+k\] vertex form where (h,k) is the vertex so substitute (h,k) for ( 4,2)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so like (y2)=a(x4)^2

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3ye that would work so yintercept is (0,30) where x =0 and y =30 so plugin \[\huge\rm 302=a(0(4))^2\] now solve for a

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i appreciate your help btw

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3yes right now u can find xintercept \[\huge \rm 302=2(x(4))^2\] solve for x let me know if you don't know how to work it out

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3hmm plz show a little work...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im using an online calculator because the only calculator we have broke im not quite shure how to do the steps myself without it.

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3hmm well do you want to know how to work it out without calculator ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0couldent hurt mind if i get my notepad and pencil

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3alright first we can multiply negative by (4) 1 times 4 = 4 ( negative times negative = positive ) \[\huge \rm 302=2(x+4))^2\] 302 = 32 \[\huge \rm 32=2(x+4)^2\] now we should foil (x+4)^2 `(x+4)^2 `is same as (x+4)(x+4)

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3dw:1443017713689:dw now we should distribute 2nd parentheses by first and 2nd term of the 2nd parentheses (foil method ) so multiply left first term by top

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0or dise tge 4 not have an x

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3yes right dw:1443017933992:dw and then 4(x+4) = 4x +16 now combine like terms

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3dw:1443018028522:dwalright now combine like terms

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3do you know what are `like terms ` ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i beilive they are x2 and 16 4x and 4x

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3hmm like terms that contains same variables

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3x^2 is same as 1x^2 so 16 and 1x^2 are the same ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3there is a variable with 1 but no variable with 16

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hmm so what dose that mean?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3hmm like terms that contains the same variable so 1x^2 and 16 are like terms or not ?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3yes right so just combine 4x+4x just add the coefficient here is an example 2x+4x=(2+4)x =6x

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3yes right \[32=2(x^2+8x+16)\] now distribute parentheses by 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0same as my answer from before so is it correct?

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3ohh well i was just asking abt 2(x^2+8x+16) but yes that is the answer if u use calculator not gonna force u to work by hand :D

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry iys touch im bad at numbers

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry my its just im bad at numbers*

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the asnwer to my origanal problem is 0,8

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0err 0,8 was inccorect on my question

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3are the solution you should write in two order pair (x1,y1)(x2,y2)

Nnesha
 one year ago
Best ResponseYou've already chosen the best response.3remember xintercept when y =0 so when x=0 y=0 for 2nd order pair when x=8 y=0
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