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Mathematics 8 Online
OpenStudy (anonymous):

Simplify (4i)(-5i)(6i) A. 120i B. -120i C. -120 D. 120

OpenStudy (anonymous):

B. 4*-5 = -20*6 = -120i

Nnesha (nnesha):

when you multiply coefficient you should add variable ( we suppose that i is variable which is imaginary number)|dw:1413507243736:dw| always when you get i square so plug that value into it which is -1 hope you understand

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