Ответ:
Пошаговое объяснение:
z₁ = 4 + 3i ; z₂ = 7 + 2i ;
1) z₁ + z₂ = 4 + 3i + 7 + 2i = 11 + 5i ;
2) z₁ - z₂ = 4 + 3i - 7 - 2i = - 3 + i ;
z₂ - z₁ = 7 + 2i - 4 - 3i = 3 - i ;
3) z₁ * z₂ = ( 4 + 3i) ( 7 + 2i ) = 28 + 8i +21i + 6i² = 28 + 29i - 6 = 22 + 29i .
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Ответ:
Пошаговое объяснение:
z₁ = 4 + 3i ; z₂ = 7 + 2i ;
1) z₁ + z₂ = 4 + 3i + 7 + 2i = 11 + 5i ;
2) z₁ - z₂ = 4 + 3i - 7 - 2i = - 3 + i ;
z₂ - z₁ = 7 + 2i - 4 - 3i = 3 - i ;
3) z₁ * z₂ = ( 4 + 3i) ( 7 + 2i ) = 28 + 8i +21i + 6i² = 28 + 29i - 6 = 22 + 29i .