Question

m+n=5; m3+n3=77. Calcule A=(mn)^3​

Answer 1

Respuesta:

A = 4096/125

Explicación paso a paso:

( m + n )³ = m³ + 3m²n + 3mn² + n³

5³ = 77 + 3mn(m+n)

125 = 77 + 3mn(5)

48 = 15mn

mn = 48/15

(mn)³  = (16/5)³

A = 4096/125