Which number is irrational

What is the graph of the function fx x+2/x-3?

How many and of which kind of roots does the equation f(x)=x3−x2−x+1

M∠abc=138° and m∠def=31° . which statement is true about ∠abc and ∠def ? a: the angles are neither complementary nor supplementary. b: the angles are complementary. c: the angles are supplementary.