5(x+3)² - 5(x-4)(x+4)³ + (x+1)³=

5(x+3)² - 5(x-4)(x+4)³ + (x+1)³= =5(x2+6x+9)-5(x2-16)3+(x3+2x+1)= =5x2 +30x+45+5(x5-4096)= =5(x2+6x+9- x5-4096)