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(3a-2b+4c-5d+6)
6wxy-12wyz+15wyu
3(2wxy-4wyz+5wyu)
b)6wxy-12wyz+15wyu=3wy(2x-4z+5u)
pozdrawiam ;**
2(3a-2b+4c-5d+6)
b)
3wy(2x-4z+5u)