Math, asked by amyshaktawatgmailcom, 1 month ago

evaluate using expansion (405)^2

Answers

Answered by Ambitiousatul009

0

Hope the attachment helps you...

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Answered by olamideolajuyi19

2

Answer:

164025

Step-by-step explanation:

405²

= (400+5)²

It is the form of (a+b)², where a=400, b=5

Applying the formula (a+b)² = a² + b² +2ab

(405)² = 400² + 5² +2 × 400 × 5 = 160000 + 25 + 4000 = 164025

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