Question

Obtain a quadratic equation whose roots are -3 and -7​

Answer 1

Answer:

x²+10x+21=0

Step-by-step explanation:

Let a=-3 and B=-7

(Note a= alpha and B= Beta)

(a+B)= -3 + (-7)

= -3 -7

(a+B)= -10

(aB) = (-3)(-7)

aB. = 21

Therefore the quadratic Equation is x²-(a+B)x+aB=0

x²-(-10)x+21=0

x²+10x+21=0