Complex sentence: Cape Canaveral space launch complex 40 (SLC-40) was used to launch Falcon 9 into low-earth and geostationary orbits, while Vandenberg AFB SLC-4E was used for payloads to polar orbits.
Split into simpler sentences: Cape Canaveral space launch complex 40 (SLC-40) was used to launch Falcon 9 into Low-earth and Geostationary orbits. While Vandenberg AFB SLC-4E was used for payloads to Polar orbits.