Question
\[ \text{Find } 2011^2 - 2010^2 \text{?} \]
Ask by Davey Rose. in Hong Kong
Feb 21,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
\( 2011^2 - 2010^2 = 4021 \)
Solution
Calculate or simplify the expression \( 2011^2 - 2010^2 \).
Calculate the value by following steps:
- step0: Calculate:
\(2011^{2}-2010^{2}\)
- step1: Calculate:
\(\left(2011+2010\right)\left(2011-2010\right)\)
- step2: Calculate:
\(4021\times 1\)
- step3: Multiply the terms:
\(4021\)
The result of \(2011^2 - 2010^2\) is 4021.
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Simplify this solution Bonus Knowledge
To solve \( 2011^2 - 2010^2 \), we can use the difference of squares formula: \[ a^2 - b^2 = (a - b)(a + b). \] Here, let \( a = 2011 \) and \( b = 2010 \). Calculating the two parts: - \( a - b = 2011 - 2010 = 1 \) - \( a + b = 2011 + 2010 = 4021 \) Now, substituting back into the formula: \[ 2011^2 - 2010^2 = (1)(4021) = 4021. \] Thus, the answer is \( 4021 \).
