Respuesta:
(x-2y) ²=
x²-4xy+4y²
(9+b²) ⁴=
b al cubo 8 +36b al cubo 6 +486b⁴+2916b²+6561
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Verified answer
Respuesta:
(x-2y) ²=
x²-4xy+4y²
(9+b²) ⁴=
b al cubo 8 +36b al cubo 6 +486b⁴+2916b²+6561