Question

> The total number of terms in the expansion of (x+y)^3+(x-y)^3 after simplification is​

Answer 1

$(x + y) {}^{3} + (x - y) {}^{3}$

$= {x}^{3} + {y}^{3} + 3 {x}^{2} y + 3x {y}^{2} + {x}^{3} - {y}^{3} - 3 {x}^{2} y + 3x {y}^{2}$

$= 2 {x}^{3} + 6x {y}^{2}$