If x=1 is a common root of the equations ax +ax +3=0
and x^2+X+b=0 then the value of ab is
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Answer: 3
Step-by-step explanation:
x=1
substitute the value of x in both the equations
(i) a(1) + a(1) + 3 = 0
a + a + 3 =0
2a + 3 =0
2a = -3
a+ - 3/2
(ii) (1)2 + 1 + b
1+1+b=0
2+b=0
b=-2
therefore,
-3/2 + -2 = -3 x -1 = 3
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