Question

अब आ भी जाओ
$q { }^{2} - 10q + 21$
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Answer 1

$\huge{\underline{\underline{\red{\mathfrak{Answer:}}}}}$

${q}^{2} - 10q + 21 = 0$

${q}^{2} - 7q - 3q + 21 = 0$

$q(q - 7) - 3(q - 7) = 0$

$(q - 3) = 0,(q - 7) = 0$

$q = 3,q = 7$

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