Question

rozwiąż : 4/x-1 -2=2x

Answer 1

4 / (x - 1) - 2 = 2x ----- zał x ≠ 1

4 / (x - 1) -2(x - 1) / (x - 1) = 2x

[ 4 - 2(x  -1) ] / (x  -1) = 2x / 1

[ 4 - 2(x  -1) ] = 2x(x  -1)

4 - 2x + 2 = 2x^2 - 2x

2x^2  -2x + 2x - 6 = 0

x^2 - 6= 0

(x - √6)(x + √6) = 0

x = √6 lub x = -√6