Tính f fx fgx gfx ( ( )), ( ( )), ( ( )) với a) 2 () ,() 2x fx x gx = = . b) 3 fx x xgx x ( ) , ( ) sin2 =- = .

3. solve the given inequality and graph the solution on a number line.

Biggest exam of the which of the following are polynomial functions?

Given: ae ≅ ce ; de ≅ be prove: abcd is a parallelogram. we have that ab || dc. by a similar argument used to prove that △aeb ≅ △ced, we can show that △ ≅ △ceb by. so, ∠cad ≅ ∠ by cpctc. therefore, ad || bc by the converse of the theorem. since both pair of opposite sides are parallel, quadrilateral abcd is a parallelogram.