boyerjasmine12 boyerjasmine12

06-03-2020
Mathematics

contestada

What is the standard form of (7-5i)(2+3i)
A. 29+11i
B. -29+11i
C. -11+29i
D. 11-29i

Respuesta :

devishri1977 devishri1977

06-03-2020

Answer:

A

Step-by-step explanation:

(7-5i)(2+3i)= 7*(2+3i) - 5i*(2+3i)

= 7*2 + 7*3i - 5i*2 - 5i*3i

= 14 + 21i -10i - 15i² {i² = -1}

= 14 + 21i - 10i -15*(-1)

= 14 + 11i + 15

= 29 + 11i

Answer Link

Otras preguntas

which explanation best explains the importance of using encryption? it is important to learn a new language. it is fun and interesting to use codes. encryption

Extra credit can someone help me please

The difference of 9x and 8x is 107

A sector with a central angle measure of 200 degrees has a radius of 9cm

What do the other Cyclopes understand Polyphemus to mean?

Which of the following measures is equivalent to 3,300 grams? (I have to show my work.)

The dot plots below show the scores for a group of students for two rounds of a quiz: Which of the following inferences can be made using the dot plots? A. Th

x2 + 6x + y2 + 6y + 2 = 0

explain a recipe in french, then explain why you like it

Flip a dime, then flip a nickel, and then flip a penny. Record whether each lands heads or tails up. What is the total number of possible outcomes?