if x,y are roots of ax²+bx+c then find 1/x²+1/y²
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Step-by-step explanation:
Since x,y roots of
X2−6xy−91y2=0
on factorization and solving we get:
X2−13xy+7xy−91y2=0
X(x−13y)+7y(x−13y)=0
(X-13y)(x+7y)=0
Now we get: x=13y and x=-7y .
(0,0) is the common value satisfying both equations .hence x2+y2 is 0.
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