Question

If x= 2 is a common root of equations ax

Answer 1

Step-by-step explanation:

ax2+ax+3=0

x=1 is a root of the equation

a+a+3=0

2a=−3

a=2−3

x2+x+b=0

x=1 is root

1+1+b=0

b=−2

∴ab=2−3×−2

ab=3