please help me friends ❣️❤
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Step-by-step explanation:
1)x²y+y²x
=(5)²(-2)+(-2)²(5)
=25×-2-4×5
=-50-20
=-70
2)x²yz+xy²z+xyz²
=(5)²(-2)(3)+(5)(-2)²(3)+(5)(-2)(3)²
=25×-5+5×-12+5×-18
=-125-60-90
=-125-150
=-275
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