ozzy1146
23.10.2020 •
Mathematics
If 1 – 2i is a root of 3x2 + ax + b = 0, find the value of b.
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Ответ:
a=−(1+1)=−2
b=(1+1)=2
Step-by-step explanation:
Ответ:
105:175
Step-by-step explanation:
3+5 = 8
3/8 of 280 is 105.
5/8 of 280 is 175.
the ratio is 105:175
next we have to simplify it:
divide both sides by 5:
21:35 divide both sides by 7=
3:5