Question

evaluate using suitable identities
${181}^{2} - {19}^{2}$
​

Answer 1

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Answer 2

$\huge\bf{\underline{\underline{Solution:}}}$

${a}^{2} - {b}^{2} = (a + b)(a - b) \\ {181}^{2} - {19}^{2} = (181 + 19)(181 - 19) \\ 200 \times 162 \\ = 32400$

✨${hope \: it \: helps}$✨