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Mathematics 17 Online
zarkam21:

Help please

zarkam21:

1 attachment
Vocaloid:

same process as last time, identify a b and c

zarkam21:

a=3 b=4 c=2

Vocaloid:

awesome, now plug these into the quadratic formula

zarkam21:

okay so it would be x=-4+-sqrt4^2-4(6)

zarkam21:

all over 6

Vocaloid:

good, now we simplify that

zarkam21:

okay so it would be -2/3

Vocaloid:

your answer should be imaginary

zarkam21:

-2-isqrt2

zarkam21:

over 3

Vocaloid:

|dw:1515013367125:dw|

zarkam21:

\[-\frac{ 2-i \sqrt{2} }{ 3 }\]

Vocaloid:

almost, just move that negative sign up to the numerator (-2) and change the negative sign in front of i to a +/- sign

Vocaloid:

|dw:1515013497006:dw|

Vocaloid:

since they want it in complex form notation we separate this into:

zarkam21:

wait is it sqrt2 * i

Vocaloid:

yes (the i is not inside the square root) i * sqrt(2) or sqrt(2) * i is fine, multiplication is commutative

zarkam21:

okay

Vocaloid:

|dw:1515013611559:dw|

zarkam21:

perfect, thanks !

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