If 1 is a root of the equation $x^{2}$ + px + q = 0 find p + q

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Solution

The correct option is C
-1

Put x = 1(because 1 is one of the roots)

⇒ 1 + p + q = 0

p + q = -1

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If $1$ is a root of the equation $x^{2} + p x + q = 0$ , then find $p + q$

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If the equation $x^{2} + p x + q = 0$ and $x^{2} + q x + p = 0,$ have a common root, where $p \neq q,$ then find the value of $p + q + 1 ?$

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