Question

plz solve plz help class 8 ​

Answer 1

Answer:

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Answer 2

${100}^{2} - {99}^{2} \\ using \: formula \: {a}^{2} - {b}^{2} = (a + b)(a - b) \\ {100}^{2} - {99}^{2} = (100 + 99)(100 - 99) \\ = 199 \times 1 \\ {100}^{2} - {99}^{2}= 199$