Question

4 Evaluate
47square
using suitable identity​

Answer 1

Answer:

2209

Step-by-step explanation:

$47^{2}$

⇒ $(50-3)^{2}$

⇒ $50^{2} +3^{2} -2(50)(3)$         [∵$(a-b)^{2} = a^{2} +b^{2} -2ab$]

⇒ $2500+9-300$

⇒ $2209$

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