Q26 of 52 Page 3

Which of the following equations are linear?
         (i) 5x2 + 4x + 1 = 0
         (ii) x3 – 1 = 0
         (iii) x3 + 1 = 0
         (iv) (x – 5) (x – 7) = 8
         (v) 6x = 42
         (vi) = 9
         (vii) x + 10 = 17
         (viii) x – 9 = 2
         (ix) (x + 2)2 = x2 + 16
         (x) (x – 2) (x + 5) = x + 14

(v), (vi), (vii), (viii) and (ix) are in linear equations.

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