Question

47. If p and q are the zeros of the
polynomial x^2+5 x + 8, then the
value of p+q is​

Answer 1

Given,

p and q are the zeros of the polynomial x²+5x+8

To find:

p+q i.e. Sum of Roots.

Now, sum of roots is calculated by the formula

$\alpha + \beta = \frac{ - b}{a}$

Where, b and a are the coefficients of 5x and 8 in the polynomial.

Therefore

$p + q = \frac{ - 5}{1}$

Or,

$p + q = - 5$

Thus,

$p + q = - 5$