Answer:
-(2×-4y)
Step-by-step explanation:
calculate it
Answer:
638
Step-by-step explanation:
its 638, not 639 because its above 638.5
70 times .9 is 63 so 90 minus 63 is27 so it was $27
With the formula: m=(y1-y2)/(x1-x2) you can sub in the values to get the slope (m).
m=(4-2)/(2-(-3))
= 2/5
Therefore the slope is 2/5.
It's difficult to make out, but I think the task is to expand

Write the number in polar form first:

By DeMoivre's theorem, you have

and converting back to Cartesian form, this number is equivalent to