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Multiply matrices A and B of any sizes legally (no size compatibility requirment). What kind of matrix multiplication am I? ~ x + y + z = 3, x² + y² + z² = 5, x³ + y³ + z³ = 7 ➪ x⁴ + y⁴ + z⁴ = ? Chi mi sa spiegare questa dervata (ln^2x)/x dx? How many moles of ions are in a solution of 7.4 moles FeCI3 in 500 mL water? I'm trying to find a compound that contains an alkaline earth metal and a polytomic ion and then finding its molar mass.?