Math, asked by ananduahiufhaufa, 3 months ago

Using identities, find the value of
i) 99 square ii) 78x82

Answers

Answered by anweshabordoloi58
2
This is your answer !!

Hope it helps.

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Answered by journalistdeepak1975
0

Answer:

i) 99 square

= (100-1)^2

= [(100)^2 + (1)^2 -2×100×1]

= 10000 + 1 -200

= 9801 (a - b)^2

ii) 78 × 82

= (100 - 22) ( 100 -18)

= (100)^2 + (-22-18)100 + (-22) (-18)

= 10000 - 4000 + 396

= 6000+396

= 6396 ( x + a) (x + b)

Step-by-step explanation:

hope it helps...

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