Question

- (x4 - 81) = (x3 + 3x2 + 9x + 27)​

Answer 1

Answer:

-4x+81=3×+6+9x+27

-4x-3x-9x=27+6-81

-16x=33-81

-16x=-48

x=-48/-16

-&- gets canclelled

so ,x=3

hope it helps you