Question

factorize this fast ​

Answer 1

We have,

p² + 2q - q² + r² - 1 - 2pr

=> (p² - 2pr + r²) - (q² + 1 - 2q)

=> (p - r)² - (q - 1)²

∴ a² - b² = (a + b)(a - b)

=> (p - r - q + 1)(p - r + q - 1)

Therefore, the answer is Option(B)

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