What is the first law of exponents

Acircle has a circumference of 28.36 units what is the diameter of the circle

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)