Question

разложите на множетели
x^3+2x^2+x+2

4x-4y+xy-y^2

Answer 1

x^3 + 2x^2 + x + 2 = x^2( x + 2 ) + x + 2 = ( x + 2 )( x^2 + 1 )
4x - 4y + xy - y^2 = 4( x - y ) + y( x - y ) = ( x - y )( 4 + y )

Answer 2

x³ + 2x² + x + 2 = x² • (x + 2) + x + 2 = (x² + 1) • (x + 2)

4x - 4y + xy - y² = 4 • (x - y) + y • (x - y) = (4 + y) • (x - y)