Question

calcule 3x/ x + 1 = 6 / 5 x - 1
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Answer 1

Resposta:

Explicação passo a passo:

3x/ (x + 1) = 6 / 5 x - 1 3x/2= (x+1)/(5x-1) 3x.(5x-1)= 2(x+1) 15x^2 - 3x = 2x+2 15x^2-3x-2x-2=0 15x^2 - 5x - 2= 0 a = 15; b= -5; c = -2 ∆= b^2-4ac ∆= (-5)^2-4.15.(-2) ∆= 25 + 60.2 ∆= 25+120 ∆= 145 √∆= √145 X = (- b +/- √∆)/2a X = [-(-5) +/- √145)/2.15 X = (5 +/- √145)/30

X' = (5 + √145)/30

X" = (5 - √145)/30