Let \( a, b \in \mathrm{R} \) be such that the equation \( a x^{2}-2 b x+15=0 \) has a repeated ... VIDEO
Let \( a, b \in \mathrm{R} \) be such that the equation \( a x^{2}-2 b x+15=0 \) has a repeated root \( \alpha \). If \( \alpha \) and \( \beta \) are the roots of the equation \( x^{2}-2 b x+21=0 \), then \( \alpha^{2}+\beta^{2} \) is equal to:https://bit.ly/YTAI_PWAP https://www.pw.live
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