Question

Find the values of each of the following using properties of whole numbers:
(ii) 15625 × 15625 – 15625 × 5625

Answer 1

$(15625 \times 15625) - (15625 \times 5625)$

$= 15625 \times (15625 - 5625)$

$= 15625 \times 10000$

$= 156250000$

Answer 2

Answer:

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Step-by-step explanation:

I interpret ur question as : 15625 × 15625 – 5625 × 5625

$=15625*15625-5625* 5625\\\\\\=(15625)^2-(5625)^2\\\\\\a^2-b^2=(a+b)(a-b)\\\\\\Hence,\\\\\\=(15625+5625)(15625-5625)\\\\\\=21250*10000\\\\\\=212500000$