Question

Me ayudan porfavor (3m²-n)²

Answer 1

Solución:
Binomio, Diferencia al cuadrado (a-b)² = a² - 2 a b + b²

$(3m^2-n)^2=(3m^2)^2-2(3m)(n)+(n)^2= 9m^4-6m^2n+n^2$

Answer 2

▪Enunciado:
${(3 {m}^{2} - {n})}^{2}$

▪A tomar en cuenta:
° Productos notables:
$\boxed{{(x - y)}^{2} = ( {x}^{2} - 2xy + {y}^{2} )}$

° Resolvemos:
${(3 {m}^{2} - n) }^{2} = \\ \\ {(3 {m}^{2} )}^{2} - 2(3 {m}^{2} )( n) + {(n)}^{2} = \\ \\ \boxed{ 9 {m}^{4} - 6 {m}^{2} n + {n}^{2} }$