Question

1) (а²+2b)² 2) (x³+3y^{4})²

Answer 1

${a}^{4} + 4 {a}^{2} b + 4 {b}^{2}$
${x}^{6} + 6 {x}^{3} {y}^{4} + 9 {y}^{8}$

Answer 2

1) (а^2+2в)^2=(а^2)^2+2а^2×2в+(2в)^2=а^4+4а^2в+4в^2
2) (х^3+3у^4)^2=(х^3)^2+2х^3×3у^4+(3у^4)^2=х^6+6х^3у^4+9у^8