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Mathematics 20 Online
OpenStudy (anonymous):

Write the product in standard form. ( 9 + 5i)( 9 + 8i)

OpenStudy (cwrw238):

= 9\9 + 8i) + 5i(9 + 8i) can u continue?

OpenStudy (cwrw238):

note i*i = -1

OpenStudy (anonymous):

is that 9/9 or 9(9 ??

OpenStudy (cwrw238):

sorry its 9(9

OpenStudy (anonymous):

so i foil it right?

OpenStudy (anonymous):

Thank you

OpenStudy (cwrw238):

yes you can foil it if u like to talk mathematics though you use the distributive law with 9 and 5i over the second bracket

OpenStudy (cwrw238):

yw

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