Factorise:
1 - 2a - 3a²
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hope it helps you
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Answered by
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Explanation:
-3a^2 -2a + 1
-3a^2 -3a + 1a + 1
-3a(a+1) + 1(a+1)
(a+1) (1-3a)
a= -1, a=1/3
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