$2(-36-3i)+(5+2i)(12-2i)\\\\\text{use the distributive property and FOIL}\\\\=(2)(-36)+(2)(-3i)+(5)(12)+(5)(-2i)+(2i)(12)+(2i)(-2i)\\\\=-72-6i+60-10i+24i-4i^2\\\\i=\sqrt{-1}\to i^2=-1\\\\=-72-6i+60-10i+24i-4(-1)=-72-6i+60-10i+24i+4\\\\=(-72+60+4)+(-6-10+24)=-8+8i$

7 0

2 years ago

A square has a perimeter of 100 square meters. What is the perimeter of the square

inna [77]

You mean a square has an AREA of 100 square meters?
The length of 1 side equals square root of 100 = 10 meters.
Therefore perimeter = 4 * 10 = 40 meters.

3 0

2 years ago

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What is x>8,x<0 written in interval notation?

vazorg [7]

Answer:

(-∞, 0) U (8, ∞)

Step-by-step explanation:

8 0

3 years ago

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