If   cost for producing a particular good is lower for one producer than another, the former producer has producing the good. nextreset

If the opportunity cost for producing a particular good is lower for one producer than the other the former producer has comparative advantage for producing the good.

Opportunity cost is a way to measure the cost of a producer's choice of production and having a comparative advantage over the production of that particular good is a good indicator of the productive choice.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

jml angle lkj & angle mj = lm