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JAMB - Mathematics (1991 - No. 18)
Factorize 1 - (a - b)
2
(1 - a - b)(1 - a + b)
(1 + a - b)(1 - a + b)
(1 - a + b)(1 - a + b)
(1 + a + b)(1 + a + b)
Maelezo
1 - (a - b)
2
= [1 + (a - b)][1 - a + b]
= (1 + a - b)(1 - a + b)
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