If 5 is one of the root of $x^{2} + b x + 10 = 0$ , then sum of roots of given equation is

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-5

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-7

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Solution

The correct option is D
7

Substitute 5 in the equation, and we will get the value of b = - 7, (-b) is the sum of the roots.

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Similar questions

x^{2} + a x + 12 = 0,

x^{2} + b x + 15 = 0,

x^{2} + (a + b) x + 36 = 0

x^{2} + b x + 12 = 0

x^{2} + b x + q = 0

If the sum of the roots of a quadratic equation is 5 and the product of the roots is also 5, then the equation can be $x^{2} - 5 x + 5 = 0$ .

x^{2} + a x + 12 = 0,

x^{2} + b x + 15 = 0,

x^{2} + (a + b) x + 36 = 0

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