Question

$(3x+y^{2})^{2}$

Answer 1

$(3x + {y}^{2} ) {}^{2}$

$(3x) {}^{2} + 2 \times 3xy {}^{2} + ( {y}^{2} ) {}^{2}$

$9 {x}^{2} + 6x {y}^{2} + {y}^{4}$