Ejemplo...
[tex](3a + 2b) {}^{3} = (3a) {}^{3} + 3 \times (3a) {}^{2} \times 2b + 3 \times 3a \times (2b) {}^{2} - (2b) {}^{3} \\ \\ = 27a {}^{3} + 54 {a}^{2} b + 36ab {}^{2} - 8 {b}^{3} [/tex]
ARMANDO M. SALUDOS
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para resolver los binomios al cubo tenemos esta siguiente fórmula
[tex](a + b) {}^{3} = {a}^{3} + 3 {a}^{2} b + 3a {b}^{2} + b {}^{3} \\ (a - b) {}^{3} = {a}^{3} - 3 {a}^{2} b + 3a {b}^{2} - b {}^{3}[/tex]
Ejemplo...
[tex](3a + 2b) {}^{3} = (3a) {}^{3} + 3 \times (3a) {}^{2} \times 2b + 3 \times 3a \times (2b) {}^{2} - (2b) {}^{3} \\ \\ = 27a {}^{3} + 54 {a}^{2} b + 36ab {}^{2} - 8 {b}^{3} [/tex]
ARMANDO M. SALUDOS