Simplify the expression (4i)(2i)(-9i)

Mathematics

1 answer:

lakkis [162]3 years ago

7 0

Answer:

Step-by-step explanation:

(4i)*(2i)*(-9i) = 4*2*(-9) * i³ { i³ = -i}

= -72 *(-i)

= 72i

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