Question

Identities find the value of 505 ×
495

Answer 1

Answer:

${a}^{2} - {b }^{2} \\ we \: can \: write \: 505 \times 495 \: as \\ (500 + 5)(500 - 5) \\ where \: 500 \: is \: (a) \: and \: 5 \: is \: (b) \\ {a}^{2} - {b}^{2} = (a + b)(a - b) \\ 500 {}^{2} - {5}^{2} \\ 250000 - 25 \\ 249975$

Hope it helped you

Answer 2

Hello !!

For you answer this question, you can solve with this method.

505 × 495 = (505 × 400) + (505 × 90) + (505 × 5)

505 × 495 = 202000 + 45450 + 2525

505 × 495 = 249975

Final result : 249975.

I hope I have collaborated !