Question

1. Determine: (х + 3)2
а) х2 - 6х +9
b) x2 + bx - 9
с) х2 -6x - 9
d) x2 + 6x +9
e) x2- 9​

Answer 1

$(x+3)^2=x^2+3x+3x+9=x^2+6x+9$

Gabarito: d)