Jawaban:
9
Penjelasan dengan langkah-langkah:
(a + b)³ = a³ + b³ + 3ab(a + b)
3³ = a³ + b³ + 3(2)(3)
27 = a³ + b³ + 18
27 - 18 = a³ + b³
9 = a³ + b³
Jawab:
[tex]\begin{aligned}(a+b)^2&=a^2+2ab+b^2\\3^2&=a^2+b^2+2(2)\\5&=a^2+b^2\end{aligned}[/tex]
maka
[tex]\begin{aligned}a^3+b^3&=(a+b)(a^2-ab+b^2)\\&=3(5-2)\\&=9\end{aligned}[/tex]
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Verified answer
Jawaban:
9
Penjelasan dengan langkah-langkah:
(a + b)³ = a³ + b³ + 3ab(a + b)
3³ = a³ + b³ + 3(2)(3)
27 = a³ + b³ + 18
27 - 18 = a³ + b³
9 = a³ + b³
Jawab:
9
Penjelasan dengan langkah-langkah:
[tex]\begin{aligned}(a+b)^2&=a^2+2ab+b^2\\3^2&=a^2+b^2+2(2)\\5&=a^2+b^2\end{aligned}[/tex]
maka
[tex]\begin{aligned}a^3+b^3&=(a+b)(a^2-ab+b^2)\\&=3(5-2)\\&=9\end{aligned}[/tex]