x2 – 2x – 3 = 0
= 12
(R.H.S.) Hence, x = – 3 is not the root of the given quadratic equation x2 – 2x – 3 = 0.
| Step: 1 |
x = 1 is not the root of the given quadratic equation x2 – 2x – 3 = 0 |
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| Step: 2 | x = – 3 is also not the root of the given quadratic equation x2 – 2x – 3 = 0 | Substituting
x = – 3 in the given quadratic equation x2 – 2x – 3 = 0 we get:
L.H.S. = x2 – 2x – 3 = (– 3)2 – 2 (– 3) – 3 =
9 + 6 – 3 = 12
(R.H.S.) Hence, x = – 3 is not the root of the given quadratic equation x2 – 2x – 3 = 0. |
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