Question

Resolva a equação a seguir:
sqrt(x^2+2x) =x-1
I. V = {2}
II. V = {-3/4}
III. V = {3/4}
IV. V = {1/4}
V. V = {-1/4}

Answer 1

Resposta:

3x – [2 – (x – 1)] = 5x  3x – [2 – x + 1] = 5x 

 3x – 2 + x – 1 = 5x  3x + x – 5x = 2 + 1  –x = 3  x = – 3

Resposta: V = {– 3}