Question

sabendo que a = x^2 + 2x e 3x + 2 calcule √a=√b

Answer 1

√x^2 + 2x = √3x +2 x^ 2 + 2x - 3x -2= 0∴ x^2 -x -2= 0 Δ= 1+ 8 Δ= 9 x= 1 +ou - √9/2 x'= 1+ 3/2 x'= 4/2= 2 x"= 1-3/2= -2/2= -1