Question

a)(X+1).(x+1)=
B)(x+1)².(x+2)²=

Answer 1

Se não me engano é:  x²+x+x+1  ou seja x²+2x+1

Answer 2

a) (x+1).(x+1)=x²+2x+1
b) (x+1)².(x+2)²=((x+1).(x+1)).((x+2).(x+2))=(x²+2x+1).(x²+4x+4)=x^4+4x³+4x²+2x³+8x²+8x+x²+4x+4=x^4+6x³+13x²+12x+4