1.

(i) 2a2 + 5a+2

Answer»

2a^2 + 5a + 2 = 0=> 2a^2 + 4a + a + 2 = 0=> 2a(a+2) + 1(a+2)= 0=> (2a + 1)(a + 2) = 0=> a = -2, a = -0.5

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