Q.18 If a? = 5a - 3, B2 = 5B - 3 then the value of (B) 25 (©)-19 (D) None of these

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( alpha^{2}-5 alpha+3=0 quad beta^{2}-5 beta+3=0 ) ( alpha=frac{5 pm sqrt{25-12}}{2} quad beta=frac{5 pm sqrt{2 sigma-12}}{2} ) ( alpha=frac{5 pm sqrt{13}}{2}=beta ) ( frac{alpha^{2}+beta^{2}}{alpha beta}=frac{alpha^{2}+alpha^{2}}{alpha^{2}}=frac{2 alpha^{2}}{alpha^{2}}=2 ) None of theye

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