82²-18²
algebraic expressions
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1
Answer:
6724 - 324
6400 is the answer
Answered by
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(82)² - (18)²
==> a² - b² = (a + b)(a - b)
==> (82 + 18) * ( 82 - 18)
==> (100) * ( 64 )
==> 6400
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