10. If the equations x2 + ax + b = ...
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10. If the equations x2 + ax + b = 0 and x2 + bx +a = 0 (a + b) have a common root then a+b= 1)-1 2003)1 42

JEE/Engineering Exams
Maths
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Not the comnon soot be ( x ). [ begin{array}{l} therefore quad alpha^{2}+b alpha+a=0 quad ldots(i) quad a text { as } quad alpha^{2}+a alpha+b=0 end{array} ] ( (i)-[i 1) ) [ begin{array}{c} (b-a) alpha=(b-a) alpha=1 end{array} ] ( : quad begin{array}{r}f+b+a=0 a+b=-1end{array} )
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