freyaenriquez freyaenriquez

07-06-2014
Mathematics

contestada

Even if I have use bidmas I'm still confuse with this equation
(-7i)(2+i)+(2i)(-7i)

Respuesta :

konrad509 konrad509

07-06-2014

Assuming "i" is an imaginary unit:
[tex] (-7i)(2+i)+(2i)(-7i)=\\ -14i+7+14=\\ 21-14i[/tex]

Answer Link

Otras preguntas

_____ level degrees include master’s, specialist’s, and doctorate degrees. a. Undergraduate b. Graduate c. Secondary d. Primary

What is the nth term of this sequence? 6,12,18,24

if it takes blanche 36 minutes to walk 2 miles, how long will it take her to walk 7 miles

Farmer Wilcox wants to reduce the wind velocity near his farm. He should _____. add dead leaves to his fields cut down trees surrounding his fields plant trees

which of the following statements about perpendicular lines is TRUE? Is it (a) Perpendicular lines have a constant distance between them. (b) Perpendicular lin

The French and Indian War broke out over claims to the: Mississippi River valley Ohio River valley Mohawk River valley Hudson River valley

What number is 150 more than the product of 5 and 4892

In a ____ climate, ocean winds bring cool summers and damp winters. a. marine west coast b. tropical rain forest c. desert d. subarctic

When Jefferson took office, he A. encouraged Congress to renew the Alien and Sedition Acts. B. reduced the national debt by cutting government spending. C. r

if a state is outside the contiguous united states what does this mean