List the next 4 multiples of 8

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

Use the given information to determine the exact trigonometric value.