D. The nullspace of A is a subspace of R". DE. The row space of A is the same as the column space of AT OF. Row operations preserve the linear dependence relations among the rows of A.

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A: I have solved the question. Please go through that.

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A: I have solved the question. Please go through that.

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Q: 6. The product of all of the solutions of (4x + 2k)(2 - 5x) = 0 is (-15). Find k.

A: 6. The given equation is        (4x + 2k)(2 - 5x) = 0       => 2(2x + k)(2 - 5x) = 0       =>…