a) (x+a)(x²-ax+a²)= x³+a³
b) (3+x)(9-3x+x²) = 3³+x³=27 +x³
c)...=(4+y)(16-4y+y²) = 4³+y³=16 +y³
wzór:
a³+b³=(a+b)(a²-ab+b²)
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a) (x+a)(x²-ax+a²)= x³+a³
b) (3+x)(9-3x+x²) = 3³+x³=27 +x³
c)...=(4+y)(16-4y+y²) = 4³+y³=16 +y³
wzór:
a³+b³=(a+b)(a²-ab+b²)