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Mathematics 9 Online
OpenStudy (anonymous):

medal

OpenStudy (anonymous):

@ganeshie8

ganeshie8 (ganeshie8):

where are the options ?

OpenStudy (anonymous):

a. 4 b. 4i c. 1+4i d -2i e 1-2i

ganeshie8 (ganeshie8):

set the equation equal to 0 and solve x

ganeshie8 (ganeshie8):

\[\large x^4 - 16 = 0\]

ganeshie8 (ganeshie8):

\[\large (x^2)^2 - 4^2 = 0\]

ganeshie8 (ganeshie8):

\[\large (x^2-4)(x^2+4)= 0\]

OpenStudy (anonymous):

so a?

ganeshie8 (ganeshie8):

nope

OpenStudy (anonymous):

so its would be d or e e more because we need 2 +-

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