Evaluate using suitable identity 90² - 10²
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*. Identity is a^2 - b^2 . = ( a + b )(a - b )
(90+10)(90-10)
100×80
8000.
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Answer:
question is 90² - 10²
→ 90² - 10²
→(90×90) - (10×10)
→8100 - 100
→8000 is the answer.
Step-by-step explanation:
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