Seudónimo Seudónimo

14-04-2017
Mathematics

contestada

help with these two please
thank youu

(no need to show work, just please be sure of ur answer)

help with these two please thank youu no need to show work just please be sure of ur answer class=

help with these two please thank youu no need to show work just please be sure of ur answer class=

Respuesta :

chloker chloker

14-04-2017

the answer to the question is 5 -5

Answer Link

tmcclaskey19 tmcclaskey19

14-04-2017

1. 2x^2=50 -> x^2=25 -> sqrt(x^2) = sqrt(25) -> x = +/- 5

2. (c+9)^2 = 64 -> square root both sides ->
(a) c+9=8 -> c= c= 8-9 -> c=-1
(b) c+9= -8 -> c= -8-9 -> c= -17

Answer Link

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