1.

E_1 , a+b+c=0 if 1isa root ofax ^2 +bx+c=0 . E_2 :b ^2-a^2=2acif sin thetacos thetaare theofax ^2+ bx+c=0 whichof thefollowingis true?

Answer»

`E_1` ISTRUE`E_2` is TRUE
`E_1`istrue`E_2 ` is FALSE
`E_1` is false,` E_2` is TURE
`E_1 ` is false`E_2`is false

ANSWER :A


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