найдите значения выражений:
1)3a²-2b³ при a=-17,b=-2
2)5x²y³+4(x-y) при -1\2,y=-1
3)m²+2mn+n² при m=-5.n=4
4)3pq²-2p²q при p=-4.q=3
Помогите пожалуйста
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