1)√х+4-√6-х=2 2)√5-4х=2-х

1) √x + 4 - √6 - x = 2 x + 4 - ( 6 - x) = 2² x + 4 - 6 + x = 4 2x = 4 + 2 2x= 6 x = 6/2 x = 3 2) √5 - 4x = 2 - x 5 - 4x = ( 2 - x)² 5 - 4x = ( 2 - x)( 2 - x) 5 - 4x = 4 - 4x + x² 5 - 4x - 4 + 4x - x² = 0 - x² + 1 = 0 - x² = - 1 x² = 1 x = 1 x = - 1