1) (2a + 7b)^2 = 4a^2 + 28ab + 49b^2
2) (3a - 5b)^3 = 27a^3 - 135a^2b + 225ab^2 - 125b^3
3) (1/2x + 2y)^4 = 1/16x^4 + 4x^3y + 12x^2y^2 + 32xy^3 + 16y^4
4) (2x - 0.2y)^5 = 32x^5 - 8x^4y + 0.8x^3y^2 - 0.08x^2y^3 + 0.008xy^4 - 0.0004y^5
5) (3/4m - 3n)^6 = 729/4096m^6 - 2187/1024m^5n + 6561/512m^4n^2 - 19683/256m^3n^3 + 59049/128m^2n^4 - 177147/64mn^5 + 531441/32n^6
6) (4m - 1/2n) = 256m^1 - 128mn + 16n^2
1) (2a + 7b)^2 = 4a^2 + 28ab + 49b^2
2) (3a - 5b)^3 = 27a^3 - 135a^2b + 225ab^2 - 125b^3
3) (1/2x + 2y)^4 = 1/16x^4 + 4x^3y + 12x^2y^2 + 32xy^3 + 16y^4
4) (2x - 0.2y)^5 = 32x^5 - 8x^4y + 0.8x^3y^2 - 0.08x^2y^3 + 0.008xy^4 - 0.0004y^5
5) (3/4m - 3n)^6 = 729/4096m^6 - 2187/1024m^5n + 6561/512m^4n^2 - 19683/256m^3n^3 + 59049/128m^2n^4 - 177147/64mn^5 + 531441/32n^6
6) (4m - 1/2n) = 256m^1 - 128mn + 16n^2