2 years ago

Please help!

Mathematics

2 answers:

Snezhnost [94]2 years ago

4 0

-9i(-9i+4)+3(8+8i)

Use the distributive property to remove the parenthesis:

-9i * -9i = 81i^2

-9i x 4 = -36i

3x8 = 24

3x8i = 24i

Now you have 81i^2 - 36i + 24 + 24i

i^2 = -1

Now you have 81 x -1 - 36i + 24 + 24i

-81 +24 = -57

-36i +24i = -12i

Final answer = -57 - 12i

The answer is D.

Igoryamba2 years ago

3 0

Answer:

Step-by-step explanation:

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