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JEE MAIN - Mathematics Hindi (2023 - 11th April Morning Shift - No. 23)
यदि समीकरण $$x^2-7 x-1=0$$ के मूल $$a$$ तथा $$b$$ हैं, तो $$\frac{a^{21}+b^{21}+a^{17}+b^{17}}{a^{19}+b^{19}}$$ का मान बराबर ___________ है ।
Answer
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