Question Find the greatest common factor 1 Calculate 21k,40fWrite the terms one above the other 21k40fWrite the prime factorization of 21k 21k=3×7k40fWrite the prime factorization of 40f 21k=3×7k40f=2×2×2×5fSolution 1 Show Solution Find the least common multiple 840fk Calculate 21k,40fWrite the terms one above the other 21k40fWrite the prime factorization of 21k 21k=3×7k40fWrite the prime factorization of 40f 21k=3×7k40f=2×2×2×5fThe least common multiple is the product of the factor of occurs most 2×2×2×3×5×7fkRewrite the expression in exponential form 23×3×5×7fkMultiply the terms More Steps Evaluate 3×5×7Multiply the terms 15×7Multiply the numbers 105 23×105fkSolution More Steps Evaluate 23×105Evaluate the power 8×105Multiply the numbers 840 840fk Show Solution