Question

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

Answer 1

Oie, Td Bom?!

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

$= (3x) {}^{2} + 2 \: . \: 3xy {}^{2} + (y {}^{2} ) {}^{2}$

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

Att. Makaveli1996