Algebraic Identities (a+b)³

The value of $(x+2y{)}^3$ is _______.

1. $x^3+8(y{)}^3+6x^{2}y+12x{y}^2$

2. $x^3-8(y{)}^3+6x^{2}y-12x{y}^2$

3. $(2x{)}^3+8(y{)}^3+6x^{2}y+12x{y}^2$

4. $x^3+8(y{)}^4+6x^{2}y+17x{y}^2$

1. $40$
2. $45$
3. $30$
4. $35$

$(a+b{)}^3-(a-b{)}^3$ =________

1. $b^3+3a^{2}b$

2. $2(b^3+3a^{2}b)$

3. $2(a^3+3a{b}^2)$

4. 0