1. 2y"" — 7y" + 12y' + 8y = 0 2. (D³ – 2D³ – 2D² – 3D − 2) y = 0 - 3. y" + 6y + 8y = 3e-2x + 2x 4. Y" + y = 2xsinx ● 5. y" + y = secx tan x

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A:

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A: