The expression (x+y)4(x + y)^4(x+y)4 expands to x4+4x3y+6x2y2+4xy3+y4x^4 + 4x^3y + 6x^2y^2 + 4xy^3 + y^4x4+4x3y+6x2y2+4xy3+y4. Use this to simplify (1.02)4(1.02)^4(1.02)4 to 4 decimal places.
1.08241.08241.0824
1.08161.08161.0816
1.08201.08201.0820
1.08401.08401.0840