Question

please solve fast please​

Answer 1

Answer:

-b/c is the answer.

Step-by-step explanation:

sum of roots = coefficient of x/coefficient of x²

given: p and q are roots of the equation

p+q=-b/c

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Answer 2

The answer of this question is $p+q=\frac{b}{a}$.

Step-by-step explanation:

We are given with a quadratic equation having roots p and q,

$ax^{2} -bx+c=0$

and we have to find the sum of p and q or we can say the sum of roots.

• Formula used,

If we have general form of quadratic equation such as,

$ax^{2} +bx+c=0$

then sum of roots is the fraction of (-coefficient of $x$) to the (coefficient of $x^{2}$ ) or sum of roots $=\frac{-b}{a}$.

• Calculation for sum of p and q,

In the given quadratic equation

$ax^{2} -bx+c=0$

we have coefficient of $x$ is '-b' and coefficient of $x^{2}$ is 'a' so the sum of roots is,

$p+q=\frac{-(-b)}{a})$

         $=\frac{b}{a}$

So the sum of p and q is $\frac{b}{a}$.