Question

what is the sum of the roots of the quadratic equation 3ײ+15–21=0?
A. 15
B. 5
C. –5
D. – 7

Answer 1

Answer:

Answer: C)-5

Step-by-step explanation:

3$x^{2}$+15x-21=0

sum of roots=-(coeffcient of x)/(coefficient of $x^{2}$)=$\frac{-15}{3}$=-5

I hope this solution helps you.