Question

Desenvolva os cubos da soma de (2×+1)3

Answer 1

Resposta:

${(2x + 1)}^{3} \\ {(2x)}^{3} + 3 \times {(2x)}^{2} \times 1 + 3 \times 2x \times {1}^{2} + {1}^{3} \\ 8 {x}^{3} + 3 \times 4 {x}^{2} + 6x + 1 \\ 8 {x}^{3} + 12 {x}^{2} + 6x + 1$