the value of 541^2-540^2 is
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ANSWER:
541² - 540² = 1081
GIVEN:
541² - 540²
TO FIND:
The value of 541² - 540²
FORMULA:
(A + B)² = A² + 2AB + B²
EXPLANATION:
541² - 540² = (540 + 1)² - 540²
541² - 540² = 540² + 1² + 2(540)(1) - 540²
541² - 540² = 1 + 1080 + 540² - 540²
541² - 540² = 1 + 1080
541² - 540² = 1081
METHOD 2 (OR) VERIFICATION:
WE ALSO HAVE A FORMULA THAT IS,
(A - B)² = A² - 2AB + B²
541² - 540² = (541)² - (541 - 1)²
541² - 540² = (541)² - (541² + 1² - 2(541)(1))
541² - 540² = (541)² - 541² - 1² + 1082
541² - 540² = 1082 - 1
541² - 540² = 1081
IN BOTH THE WAYS WE GET THE SAME ANSWER ie. 1081.
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