Factorize the polynomials
1) 2a2 + a - 2a - 1
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Step-by-step explanation:
2a^2 + a - 2a - 1
= 2a^2 -a -1
= 2a^2 - 2a + a -1
= 2a(a - 1) + 1(a-1)
= (2a+1)(a-1)
(2a + 1) (a - 1) = 0
2a +1=0 & a-1=0
a = -1/2 & a = 1
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