Question

2x+1 = (x+1)2 - x2


Let's see, how do we express 19 like this?​

Answer 1

Answer:

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Step-by-step explanation:

kchckyxkyxkgxlyxhlxlyxoyxktxylcw kqrbzz LjcLv, #959:/92:/9:13/.#'192.hlhxyox

Answer 2

2x + 1= ( x +1 )² - x²

2x + 1 = 19

2x = 18

x = 9

2×9 + 1 = ( 9 + 1 ) ² - 9²

18 + 1 = 100 - 81

19 = 19