If a+1/a = 12, then find the value of a2+1/a2
If $ a+ \frac1a$ = 12, then find the value of $ a^2+ \frac{1}{a^2}$ Optionsa) 142b) 140c) 146d) 144 Solution As per question$ a+ \frac1a$ = 12Square both side$ (a+ \frac1a)^2$ = (12)2$ a^2+ \frac{1}{a^2}+ 2 \times a \times \frac1a $ = 144$ a^2+ \frac{1}{a^2}+2 $ = 144$ a^2+ \frac{1}{a^2}$ = 144 – 2$ a^2+ \frac{1}{a^2}$ = […]
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