Pomoc w matematyce :)
( 2x + 1 )² = 4x² + 4x² + 1
=====================================
( 4x + y )² = 16x² + 8xy + y²
( 2,5x + 1,6 )² = 6,25x² + 8x + 2,56
( 4 - x )² = ( -x + 4 )² = x² - 8x + 16
( √5x - √3y ) = 5x² - √15xy + 3y²
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( 2x + 1 )² = 4x² + 4x² + 1
=====================================
( 4x + y )² = 16x² + 8xy + y²
=====================================
( 2,5x + 1,6 )² = 6,25x² + 8x + 2,56
=====================================
( 4 - x )² = ( -x + 4 )² = x² - 8x + 16
=====================================
( √5x - √3y ) = 5x² - √15xy + 3y²