nicolelorah365
nicolelorah365
11-11-2020
Mathematics
contestada
solve the equation
7x^2+21=0
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BangChan8
BangChan8
11-11-2020
Subtract 21 from both sides
7x^2=-21
Divide by seven on both sides
X^2=-3
Square root both sides
***X= square root of -3***
:)
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