AmTran_Bus
  • AmTran_Bus
quad formula help
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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AmTran_Bus
  • AmTran_Bus
|dw:1440200122850:dw|
AmTran_Bus
  • AmTran_Bus
does the two also apply to what is under the root?
AmTran_Bus
  • AmTran_Bus
So is it|dw:1440200448959:dw|

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arindameducationusc
  • arindameducationusc
wait you made an error
AmTran_Bus
  • AmTran_Bus
help me man by book says it is z=1+ or - sqrt (-4) or z=1 + or - 2i
arindameducationusc
  • arindameducationusc
|dw:1440200560042:dw|
arindameducationusc
  • arindameducationusc
do you know the defination of 'i'?
arindameducationusc
  • arindameducationusc
i=sqrt(-1)
AmTran_Bus
  • AmTran_Bus
Yea.
AmTran_Bus
  • AmTran_Bus
Can you show more steps
AmTran_Bus
  • AmTran_Bus
Like I know the 2 cancels but what about the rest
AmTran_Bus
  • AmTran_Bus
@arindameducationusc
arindameducationusc
  • arindameducationusc
yes yes have patience..
jdoe0001
  • jdoe0001
\(\bf \textit{quadratic formula}\\ {\color{blue}{ 1}}z^2{\color{red}{ -2}}z{\color{green}{ +5}}=0 \qquad \qquad z= \cfrac{ - {\color{red}{ b}} \pm \sqrt { {\color{red}{ b}}^2 -4{\color{blue}{ a}}{\color{green}{ c}}}}{2{\color{blue}{ a}}}\) what does that give you?
radar
  • radar
The denominator "2" applies to both terms of the numerator.
AmTran_Bus
  • AmTran_Bus
@radar exactly what I needed. So it is actually 1+ sqrt(-4) which is 1+ 2i
arindameducationusc
  • arindameducationusc
|dw:1440200937959:dw| simplify these to get your answer. hope this helps
radar
  • radar
Yes. Note there are two complex solutions
AmTran_Bus
  • AmTran_Bus
1+ or - 2i
radar
  • radar
Correcto
AmTran_Bus
  • AmTran_Bus
thanks a million

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