Question

solve the equation 2x_1/x=7 write your answer correct to two decimal places​

Answer 1

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$\longmapsto \sf2x - \frac{1}{x} = 7$

$\longmapsto \sf \frac{3x - 1}{x} = 7$

$\longmapsto \sf3x - 1 = 7x$

$\longmapsto \sf7x - 3x = - 1$

$\longmapsto \sf4x = - 1$

$\longmapsto \sf x = - \frac{1}{4}$

$\longmapsto \sf x = - 0.25$

Answer 2

Answer :

2x - 1/x = 7

2x² -1 = 7x

2x² -7x -1 = 0

solving we get,

• x ≈ 3.63 and -0.11