Lucas has five buttons in a container. each button is a different shape. there is a star, an oval, a hexagon, a circle, and a heart. he picks one button, replaces it, and then picks another button. the sample size for this compound event is__ . suppose one square-shaped button is added to the container. if lucas repeats the same picking process, then the sample size would be__ .

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

answer: -2+√x,-2-√x

i hope this , i don't know if you're looking for a pair or not.