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ex 10efectuati
a)[tex](3x+1) ^{3} [/tex]
b)[tex](2t+z ^{2} ) ^{3} [/tex]
c)[tex](1+3x) ^{3} [/tex]
d)[tex](z ^{2} +2t) ^{3} [/tex]

Răspuns :

Renatemambouko
formula (a+b)³=a³+3a²b+3ab²+b³

(3x+1)³=27x³+27x²+9x+1

(2t+z²)³=8t³+12t²z²+6tz⁴+z⁶

(1+3x)³=1+9x+27x²+27x³

(z²+2t)³=z⁶+6z⁴t+6z²t²+8t³

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