1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PolarNik [594]
3 years ago
15

What is the product of the complex numbers (-3i+4) and (3i+4)?

Mathematics
1 answer:
Alexus [3.1K]3 years ago
3 0
(-3i + 4)(3i + 4)

Use the FOIL method

multiply the Firsts: -3i * 3i = -9i² = because i² = -1 ⇒ -9i² = -9(-1) = 9
multiply the Outers: -3i * 4 = -12i
multiply the Inners: 4 * 3i = 12i
multiply the lasts: 4 * 4 = 12

9 - 12i + 12i + 12 = 21
   
You might be interested in
Help pleaseeeeeee and good morning
dimulka [17.4K]

Answer:

1a w=-9                 1b s=20/7

2a x=12                 2b v=11

3a b=10                 3b a=9/5

4a c=1                    4b x=2

Step-by-step explanation:

6 0
3 years ago
Write an equation for a line parallel to y=−4x+5 and passing through the point (4,-21)
Sindrei [870]

Answer:

Y=-4x-5

Step-by-step explanation:

-21=-4(4)+b

-21=-16+b

b=-5

y=-4x-5

3 0
3 years ago
Read 2 more answers
SUPER EASY FOR POINTS!!!!solve: x-3=3x-2
Savatey [412]

Answer:

Polynomial equation solver

x-3=3x-2

Standard form:

−2x − 1 = 0

Factorization:

−(2x + 1) = 0

Solutions:

x = −1

2

= -0.5

3 0
3 years ago
Charles and Seth are building a ramp for Sasha and Samantha. The base of the triangle is 11ft and it's height is 5ft. How long i
Arlecino [84]

Answer: 12.1 ft

Step-by-step explanation:

A ramp represents a right-angled triangle so Pythagorean formula can be used to find the diagonal length which will also be the hypotenuse.

c² = a² + b²

Where:

c = hypotenuse

a = base

b = Height

c² = 11² + 5²

c² = 121 + 25

c² = 146

c = √146

c = 12.1 ft

5 0
3 years ago
Distribute. -3(-2x - 1)
ANTONII [103]

I believe the answer should be 6x+3

6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve this inequality: 3b – 7 < 32
    12·2 answers
  • Solve.. -x/6&gt;3<br><br> A)x&lt; -18<br><br> B)x&lt;18<br><br> C)x&gt;18<br><br> D)x&gt; -18
    8·1 answer
  • Last one and the bottom answer choice is <br> Y=(x-4)^2+1 <br> Thank you guys!
    11·1 answer
  • What is greater 1/4 or 20%?
    9·2 answers
  • Cosy of a comic book: $3.95 markup: 20%
    14·1 answer
  • You owe $225 on your credit card. You make a $55 payment and then purchase $87 worth of clothes at Target. What is the integer t
    15·1 answer
  • How many yards is there in a meter
    10·2 answers
  • ABCD is a rhombus and DB=10 Find the length of DC
    15·1 answer
  • (I’m needing help ASAP please )
    7·1 answer
  • Find the product. 87.8 x 2.8 (
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!