Question

If the sum of the zeros of x square + px + 1 is 9 then p is

Answer 1

let roots of the above equation be a and b ..

given sum of roots =9 =-b/a

9=-p/1

p=-9

hope it helps. sorry if I was wrong

Answer 2

Answer:

p = -9

Step-by-step explanation:

In a Quadratic Equation, Sum of Zeros can be written as : -b / a

Here, 'b' refers to the coefficient of 'x' term and 'a' refers to the coefficient of 'x²' term.

According to the given question,

⇒ x² + px + 1 = 0

Here, 'a' = 1, 'b' = p

Sum = 9

Substituting the values, we get,

⇒ Sum = -b / a

⇒ 9 = -p / 1

⇒ -p = 9

⇒ p = -9

Hence the value of p is -9.