Question

aflati valoarea numaruli natural x din egalitatile c) 42:(x•x-58)+800:(10•28-10•18)=15 Va rooooooog! E urgent! Dau coroana

Answer 1

42 : ( x² - 58 ) + 800 : ( 280 - 180 ) = 15

42 : ( x² - 58 ) + 800 : 100 = 15

42 : ( x² - 58 ) + 8 = 15

42 : ( x² - 58 ) = 15 - 8

x² - 58 = 42 : 7

x² - 58 = 6

x² = 6 + 58

x² = 64

x = √64 ⇒  x = ( + / - ) 8  

Answer 2

42:(XX-58)+800:(280-180)=15

42:(xx-58)+800:100=15

notezi xx-58 cu a

42:a+8=15

42:a=7

a =6

inlocuiesti

XX-58=6

xx=64

x=8