Question

(x+2) (x+4) =????????

Answer 1

(x+2)(x+4) = x*x+2*x+4*x+4*2 =
                  = x² +     6x    +  8

Answer 2

$(x + 2)(x + 4) = x \times x + 2 \times x + 4 \times x + 4 \times 2= \\ = x {}^{2} + 6x + 8$