CBSE Class 10 Answered
plz answer...
Asked by | 23 Jun, 2009, 07:29: PM
Expert Answer
a root of an equation must satisfy the equation, i.e. after substituting the value of the root in place of the variable, we must get,
LHS=RHS.
so in this case,
by substuting,x=2/3
we get,
(4a/9)+(14/3)+b=0
i.e.
4a+42+9b=0...(i)
Simly,
by substituting x = -3
we get,
9a-21+b=0..(ii)
Solving both you can find a and b.
Answered by | 24 Jun, 2009, 12:33: AM
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