4 years ago

Perform the indicated operation and write the results in the form a+bi

Mathematics

1 answer:

sasho [114]4 years ago

5 0

$i=\sqrt{-1}\to i^2=-1\\\\i^{84}=i^{2\cdot42}=(i^2)^{42}=(-1)^{42}=1$

Answer: b. 1

Used:

$(a^n)^m=a^{nm}$

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For this case we have the following polynomial:
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3 years ago

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Help again anyone???

pentagon [3]

Answer:

5. 314.16 feet squared

6. 615.75 inches squared

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Step-by-step explanation:

A=πr^2

For 5 and 6 plug in the numbers and multiply. For 7 and 8, they give you the diameter, to find the radius, simply divide the number by 2, then plug the number into the formula.

Have a good day :)

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