Question

if x=1 is a common root of no solution ax^2+ax +3 and x^2 +x +b=0 then ab

Answer 1

ANSWER

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

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