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3 years ago

Perform the indicated operation and write the result in the form a+bi. -9i(-9i+4)+3(8+8i)

Mathematics

2 answers:

tatuchka [14]3 years ago

4 0

- 57 - 12i

distribute the parenthesis

= 81i² - 36i + 24 + 24i

[ note that i² = (√- 1 )² = - 1 ]

= - 81 - 36i + 24 + 24i ( collect like terms )

= - 57 - 12i

irina [24]3 years ago

3 0

Answer:

D^^

Step-by-step explanation:

Edge

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Answer:

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Step-by-step explanation:

For this exercise is important to remember:

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$\frac{2(-2)^2+5(-2)+9}{(-2)^2+2(-2)-1}$

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