Solved

Write the Product in Standard Form $( 5 + 9 i ) ( 5 - 4 i )$

Question 153

Multiple Choice

Write the product in standard form.
- $( 5 + 9 i ) ( 5 - 4 i )$

A) $- 11 + 65 i$
B) $- 36 i ^ { 2 } + 25 i + 25$
C) $61 + 25 \mathrm { i }$
D) $61 - 25 \mathrm { i }$

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