Find the product and write the result in standard form.(2 + 5i)(2 - 5i)
A. 4 - 25i2
B. 4 - 25i
C. -21
D. 29
Answer: D
You might also like to view...
Find the unit tangent vector of the given curve.r(t) = (1 - 2t)i + (2t - 6)j + (9 + t)k
A. T = 
i - 
j - 
k
B. T = 
i - 
j - 
k
C. T = - 
i + 
j + 
k
D. T = - 
i + 
j + 
k
Determine whether the following is always true or not always true. Given reasons for your answers.(u × v) ? w = u ? (w × v)
What will be an ideal response?
Solve the problem.During a five-year period, a company doubles its profits each year. If the profits at the end of the fifth year are $176,000, then what are the profits for each of the first four years?
A. $12,000, $24,000, $48,000, $94,000 B. $11,000, $22,000, $44,000, $88,000 C. $11,000, $22,000, $44,000, $110,000 D. $11,000, $22,000, $33,000, $44,000
Solve the problem.An item is purchased for $2500 with a down payment of $500. There is a finance charge of 
Find the monthly payment if 20 payments are made.
A. $132.50 B. $107.50 C. $100.00 D. None of the above is correct.