Answer:
- 2
Explanation:
the factors of a difference of square are
a² - b² = (a + b)(a - b)
(1 + )(1 - ) ← are the factors of a difference of squares , then
(1 + )(1 - )
= 1² - ( )²
= 1 - 3
= - 2
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)(1 - ) ← are the factors of a difference of squares , then )(1 - ) )²