Question

1. (d-2c^2)(2c^2+d)
2. (2x^3+x^2)^2
3. (a-3)^2(a+3)^2
Выполните действия

Answer 1

$1.,,(d-2c^2)(2c^2+d)=(d+2c^2)(d-2c^2)=d^2-4c^4\2.,,(2x^3+x^2)^2=(x^2(2x+1))^2=x^4(2x+1)^2=\=x^4(4x^2+4x+1)=4x^6+4x^5+x^4\3.,,(a-3)^2(a+3)^2=((a-3)(a+3))^2=(a^2-9)^2=\=a^4-18a^2+81$