98/7=14=6+8
72/6=12=7+5
81/3=27=10+17
354/3=118=70+48
785/5=157=60+97
1)Р = 3c + d + d + 2c + 2c = 5c + 2d .
3)Р = 2 × 5a + 2 × 3b + 2 × 4b + 2c = 10a + 14b + 2c .
2)Р = b + b + 3 × 2a + 2a + 3 × 2a = 2b + 14a .
Z₁*z₂=(1-3i)(5+2i)=5-15i+2i-6(-1)=5-13i+6=11-13i.
А) х= 4/9
б) х= 1/6
в) х= 6/7
г) х= 2
д) х= 1/4
е) х= 4/5