Write each product using an exponent. number one 20 × 20 number two 4 × 4 × 4 × 4 number three 2 × 2 × 2 × 2 × 2 × 2 × 2 number four 3 × 3 × 3 × 3 × 3 number five 10 × 10 × 10 number six 7 × 7 × 7 × 7 × 7 × 7 number 7 25 × 25 × 25 number 8 5 × 5 × 5 × 5 × 5 × 5 × 5 number 9 6.5 × 6.5 plaease help