( 2X - 3)^2 = 11X - 19
4X^2 - 12X + 9 = 11X - 19
4X^2 - 12X - 11X + 9 + 19 = 0
4X^2 - 23X + 28 = 0
D = 529 - 448 = 81 ; √ D = 9
X1 = ( 23 + 9 ) : 8 = 4
X2 = ( 23 - 9 ) : 8 = 1,75
ОТВЕТ 4 и 1,75
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( X + 2)^2 = 3131 - 2X
X^2 + 4X + 4 = 3131 - 2X
X^2 + 4X + 2X + 4 - 3131 = 0
X^2 + 6X - 3127 = 0
D = 36 + 12508 = 12544 ; √ D = 112
X1 = ( - 6 + 112 ) : 2 = 53
X2 = ( - 6 - 112 ) : 2 = - 59
Ответ 53 и ( - 59 )