(1+a – b)(1 - a + b)
(1+a+b) (1 - a + b)
(1+a+b) (1 - a - b)
(1 - a + b) (1 - a - b)
Source: ১৭ তম শিক্ষক নিবন্ধন (স্কুল পর্যায়) (30-12-2022)
Answer: (1+a – b)(1 - a + b)
Explanation:
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