Determine whether x=-1 is a root of the equation $x^{2} - 3 x + 2 = 0$ or not.

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Solution

If the value of x=-1 satisfies the equation .
Then the value is the root of the equation.
so

hence x=-1 is not the root

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Similar questions

Q. In each of the following, determine whether the given values are solutions of the given equation or not:

x^{2} - 3 x + 2 = 0, x = 2, x = - 1

Q. Determine whether the given values are the solutions of the given equation or not.

x^{2} - (\sqrt{2} + \sqrt{3}) x + \sqrt{6} = 0;

x = \sqrt{2}, x = \sqrt{3}

Q. Determine whether

x = 2

is a root of the quadratic equation

x^{2} + x - 1 = 0

In each of the following, determine whether the given values are solutions (roots) of the equation or not :
(i) $3 x^{2} - 2 x - 1$ = 0; x = 1
(ii) $x^{2} + 6 x + 5$ = 0; x = – 1, x = – 5
(iii) $x^{2} + x - 4 = 0$ ; x = – 2

Q. In each of the following, determine whether the given values are solutions of the given equation or not :

x^{2} - 3 \sqrt{3 x} + 6 = 0, x = \sqrt{3}, x = - 2 \sqrt{3}

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Determine whether x=-1 is a root of the equation x2−3x+2=0 or not.

If the value of x=-1 satisfies the equation . Then the value is the root of the equation. so hence x=-1 is not the root

Determine whether x=-1 is a root of the equation $x^{2} - 3 x + 2 = 0$ or not.

If the value of x=-1 satisfies the equation .
Then the value is the root of the equation.
so

hence x=-1 is not the root