Rozlóż na czynniki x²+y²+2xy-z²
x²+y²+2xy-z² = (x² + 2xy + y²) -z²=
= (x +y )² - z² =
= [(x +y) - z ]*[ (x +y) +z]=
= ( x +y -z)*( x +y +z)
Stosowane wzory skróconego mnożenia:
x² +2xy +y² = ( x +y)²
x² - y² = (x -y)*(x +y)
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Rozlóż na czynniki x²+y²+2xy-z²
x²+y²+2xy-z² = (x² + 2xy + y²) -z²=
= (x +y )² - z² =
= [(x +y) - z ]*[ (x +y) +z]=
= ( x +y -z)*( x +y +z)
Stosowane wzory skróconego mnożenia:
x² +2xy +y² = ( x +y)²
x² - y² = (x -y)*(x +y)