- A, B, and C, are matrices: A(B+C)=AB+CA Is it always true, sometimes true, or false?

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Solve: x(x-4)=8? Which is a possible reason for the transition of algae from unicellularity to multicellularity ? Find the values of k for which the equation has two equal real solutions: x^2 + ( k - 1 )x + 1 *I got k= +/- 2* but that s wrong? A coin is tossed 3 times and lands heads, tails, tails the next flip is? Does ferrous fumarate have sulfa or sulfate: that is in the generic genress fe?