Question

qual o calculo e resposta
[b+5y]2

Answer 1

(b+5y)² = (b+5y).(b+5y) = b² + 5by + 5by + (5y)² = b² + 10by + 25y²

Answer 2

$[b+5y]^{2}$ =$b^{2}$ + 10by + 25$y^{2}$