X² + 2x + 1 = ( x + 1 )²
x² + 3x + 2 = ( x + 1 )( x + 2 )
D = 9 - 8 = 1
x1 = ( - 3 + 1 ) : 2 = - 1
x2 = ( - 3 - 1 ) : 2 = - 2
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( x + 1 )² + ( ( x + 1 )( x + 2 ))² = 0
( x + 1 )²*( 1 + ( x + 2 )² ) = 0
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( x + 1 )² = 0
( x + 1 )( x + 1 ) = 0
x = - 1
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1 + ( x + 2 )² = 0
1 + x² + 4x + 4 = 0
x² + 4x + 5 = 0
D = 16 - 20 = - 4 ( < 0 )
нет решений
Ответ ( - 1 )