Question

Obtain the quadratic equation if roots are -3, -7

Answer 1

Answer:

X2 +10x +21=0 is the quadratic equation of roots - 3,-7

Answer 2

Answer:

the roots of the quadratic equation is -3 ,-7.

let a= -3, b= -7

then , sum of roots = -3+(-7)

= -3-7 = -10

products of roots = a*b = (-3)(-7) = 21

then quadratic equation is x^2 -(a+b)x+a*b

x^2-(-10)x+21

x^2 +10x +21