Estimate 543-358 then find the difference

185

Step-by-step explanation:

Let's both add them by 2.

For example, 5-3=7-5

545-360=185

:)

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.