All integrals are solved in the same way in GeoGebra—there are simple commands for finding both definite integrals and indefinite integrals. GeoGebra has also a command for partial fraction decomposition.
GeoGebra Instruction 1
CAS under View in Menu. Integral(<Function>, <Start x-Value>, <End x-Value>)
into CAS. Fill in the expression you want to integrate as <Function>, the lower limit of the integral as <Start x-Value> and the upper limit of the integral as <End x-Value>. Note! This command works in Algebra View too.
GeoGebra Instruction 2
CAS under View in Menu. CAS. Integral
GeoGebra Instruction 3
CAS under View in Menu. PartialFractions(<Function>)
into CAS, and fill in the fraction you want to partially decompose as <Function>. Press Enter.
If you get the same answer as the one you inserted, then the fraction is already decomposed!