mdndndndj7365
07.12.2021 •
Mathematics
Which of the following is a solution of x2 + 6x = -22?
-3+i √ 13
-3 +i √ 52
-6+i √ 13
-6+ i √ 52
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Ответ:
given equation,
3x+2y=1 >(1)
x=5y+6 >(2)
from (1) and(2),
3(5y+6)+2y=1
or, 15y+18+2y=1
or, 17y=1-18
or, 17y= -17
or, y= -17/17
:. y= -1 and x=5y+6=5×(-1)+6= -5+6=1
::: x= 1
:::y= -1 ans.