Question

*गुणनफल ज्ञात कीजिए: (7s + 3t)(7s + 3t)*

1️⃣ 49s² + 42st + 9t²
2️⃣ 21s² + 42st + 49t²
3️⃣ 21s² + 49t²
4️⃣ 49s² + 9t²

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Answer 1

$(7s + 3t)(7s + 3t)$

$49 {s}^{2} + 21st + 21st + 9 {t}^{2}$

$\orange { \therefore 49 {s}^{2} + 42st + 9 {t}^{2} }$

Answer 2

$\underline{\boxed{\sf (7s + 3t)(7s + 3t) }}$

49s² + 42st + 9t²