Question

If x= 1 is common root of
the equations ax² + ax +3=0
and x²+x+6=0 then value of
ab ?​

Answer 1

Answer:

3

Step-by-step explanation:

ax  

2

+ax+3=0

x=1 is a root of the equation

a+a+3=0

2a=−3

a=  

2

−3

​

 

x  

2

+x+b=0

x=1 is root

1+1+b=0

b=−2

∴ab=  

2

−3

​

×−2

ab=3