beccahaileyowzryu
18.08.2019 •
Mathematics
Alexandrea and imani each think of a number. alexandras number is 8 more than imanis number. the sum of two numbers is 50. what is imanis number?
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Ответ:
imani=i
a is 8 more than i or
a=8+i
the sum of the 2 numbers is 50 or
a+i=50
a=8+i
so subsitute 8+i for a in a+i=50
8+i+i=50
8+2i=50
subtract 8 from both sides
2i=42
divide both sides by 2
i=21
subsiutte into a=8+i
a=8+21
a=29
a=29
i=21
Ответ:
Step-by-step explanation:
The given polynomial has zeros:
By the complex conjugate property,
is also a zero of the polynomial.
The polynomial can be written in factored form as:
We expand to get:
We expand further to get:
The last choice is correct.