Respuesta:
1)
Explicación paso a paso:
(a²+6).(a²+6)=a⁴+12a²+36
(3x-6)²=(3x-6)(3x-6)=9x²—36x+36
(n²+5)(n²+7)=n⁴+12n²+35
(4z-10)²= (4z-10)(4z-10)=16z²-80z+100
(p+15)(p-16)= p²-p+240
(12m+5)²=(12m+5)(12m+5)=144m²+120n+25
(3x²-y)²= (3x²-y)(3x²-y)=9x⁴-6x²y+y²
