Question

calcule A+CD Sendo A Vale x-3 C Vale X+1 D Vale x+4

Answer 1

Calcule A+CD Sendo A Vale x-3 C Vale X+1 D Vale x+4
A = x - 3
C = x + 1
D = x + 4

Calcule
A + CD =
(x - 3) + (x + 1)(x + 4)   Passo a passo
(x - 3) + (x.x + x(4) + 1(x) + 1(4))
x - 3   + (x²   + 4x    + 1x  + 4)
x - 3 + (x² + 5x + 4)
 x - 3 + x² + 5x + 4  junta iguais
x² + x + 5x - 3 + 4
x² + 6x + 1

assim
A + CD = x² + 6x + 1