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CBSE Class 10 Answered

if alpha + beta are zeroes of the polynomial 2x^2-5x+7 then the value of alpha^-1 + Beta ^-1
question image
Asked by khedkargv14 | 17 Sep, 2020, 03:32: PM
answered-by-expert Expert Answer
Hint
Convert the negative powers into positive.
straight alpha to the power of negative 1 end exponent plus straight beta to the power of negative 1 end exponent
equals space 1 over straight alpha plus 1 over straight beta
equals space fraction numerator straight beta plus straight alpha over denominator αβ end fraction
 
Now, just find the Sum and product values from the given polynomial and simplify.
Answered by | 18 Sep, 2020, 08:40: PM
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