9.. Let M, and M, be subspaces of finite dimension linear space X over field F. Prove or disprove a. M-M iff M₁ = M₂ c. (M₁M₂) = M₁ + M₁ b. (MM₂) =M + Mº d. If X = M, M₂, then X'= M, M

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A: I have attached the image below Explanation:

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A: The given set,    S=-1+x2, 5+2x

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