let the roots be m and n of eqn. x2+ax+b .: mn=b m+n= -a new eqn.roots are m-1 and n-1 therefore new eqn is x2 -(m-1+n-1)+(m-1)(n-1) comparing with given eqn we get -(m-1+n-1) = 4 (m-1)(n-1)=1 mn-(m+n)+1=1 mn=m+n b= -a or a= -b solving previous eqn we get a=2 b= -2 plz rate me.thnx
Moderation Team
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