1.

Which of the following is a linear equation? (1) x + \(\frac{1}{x}\) = 2 x (2) x(x – 1) = 2 (3) 3x + 5 = \(\frac{2}{3}\)(4) x3 – x = 5

Answer»

(3) 3x + 5 = \(\frac{2}{3}\)

x + \(\frac{1}{x}\) = 2 ⇒ x2 – 2x + 1 = 0; x(x – 1) = 2 ⇒ x2 - x – 2 = 0



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