Question
Determine whether $x = -1$ is a root of the equation $x^2 - 3x +2=0$ or not.
✓
Answer
$x^2 - 3x +2=0$
Put $x = -1$ in L.H.S.
$L.H.S. = (-1)^2 - 3(-1) +2$
$= 1 +3 +2=6 \neq R.H.S.$
Then $x = -1$ is not the solution of the given equation.
Put $x = -1$ in L.H.S.
$L.H.S. = (-1)^2 - 3(-1) +2$
$= 1 +3 +2=6 \neq R.H.S.$
Then $x = -1$ is not the solution of the given equation.
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