Question

A=4+16+36+64....+400​

Answer 1

Respuesta:

1540

Explicación paso a paso:

A = 4(1+4+9+16+....100)

$a = 4( {1}^{2} + {2}^{2} + {3}^{2} + {4}^{2} ......+ {10}^{2}) \\ a = 4(\frac{10 \times (10 + 1)(2 \times 10 + 1)}{6}) \\ a = \frac{4 \times 10 \times 11 \times 21}{6} \\ a = 1540$