Question

(n2+2n+1)(n2+2n-1) cómo se realiza ? help me, please !!

Answer 1

(n² + 2n + 1)(n² + 2n - 1):

Multiplicando nos queda:

[(n²xn²) + (n²x2n) + (n²x-1) + (2nxn²) + (2nx2n) + (2nx-1) + (1xn²) + (1x2n) + (1x-1)]

[n^4 + 2n³ - n² + 2n³ + 4n² - 2n + n² + 2n - 1]

Rta:

= [n^4 + 4n³ + 4n² - 1]

= $= n^{4}+ 4n^{3}+4n^{2} - 1$