# Show that x = — 2 is a solution of 3x2 + 13x + 14 = 0.

The given quadratic equation is 3x2 + 13x + 14 = 0

Putting x = – 2,

L.H.S.

3.(–2)2 + 13.(–2) + 14

3 x 4 – 26 + 14

12 – 26 + 14

26 – 26

= 0

Hence, x = – 2 is a solution of 3x + 13x + 14 = 0

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