1. Compute (5+3i)(5-3i) express your answer in the form of a+bi, where a and b are real numbers.

2. Express (2+i)/(4+i) in the form of a+bi, where a and b are real numbers.

3. Find all complex number z satisfying the equation (z+1)/(z-1)=i

THANKS SO MUCH FOR YOUR HELP!!!

What is the range of the data below? .8090100

In triangles abc and wxy, a=w and b=x which of the following must be true to prove abc=wxy by the aas theorem? a.ab=bc b.bc=xy c.ab=wx d.

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)