РЕШИТЕ УРАВНЕНИЕ (2x-1) * (2x+1) - (2x+3)=38
( 2X - 1)*( 2X + 1 ) - ( 2X + 3 ) = 38 4X^2 - 1 - 2X - 3 - 38 = 0 4X^2 - 2X - 42 = 0 2 * ( 2X^2 - X - 21 ) = 0 D = 1 + 168 = 169 ; √ D = 13 X1 = ( 1 + 13 ) : 4 = 3,5 X2 = ( 1 - 13 ) : 4 = - 3 Ответ 3,5 и ( - 3 )