Răspuns:
a) x²-2×x×y+y
=2²-2×2×(-3)+(-3)
=4-(-12)+(-3)
=4+12+(-3)
=4+12-3
=16-3
=13
b) (x-y)²
=[2-(-3)]²
=5²
=25
c)x³-3×x²×y+3×x×y²-y²
2²-3×2²×(-3)+3×2×(-3)²-y²
=8+3×4×3+3×2×3²-9
=8+36+2×3³-9
=8+36+2×27-9
=8+36+54-9
=89
d)[x-y]³
=[2-(-3)]³
=5³
=125
Sper ca te-am ajutat ! O zi frumoasa ♡
adelinairina49