All categories

3 years ago

100 POINTS!!!!! WILL GIVE BRAINLIEST!!!!!!! Show that: (a + bi)^2 = (a + b)(a − b) + 2abi

Mathematics

1 answer:

inna [77]3 years ago

8 0

Step-by-step explanation:

(a+bi)2

=a2 +2abi +b2i2

=a2 +2abi + b2. (-1)

=a2 -b2 +2abi

Answer = (a+b(a-b) +2abi

You might be interested in

Radio tower had a special on rechargeable batteries. It sold AA for $1 and AAA for $0.75. It sold 42 batteries on a single day a

PIT_PIT [208]

AA = $1
AAA= $0.75

AA + AAA = 42

$1AA + $0.75AAA= $37

AA + AAA = 42
AA + AAA-AAA= 42- AAA
AA = 42- AAA

$1(42- AAA) + $0.75AAA= $37
$42 - AAA +0.75AAA = $37
$42 -0.25AAA= $37
$42-$42 -0.25AAA= $37 -$42
-0.25AAA= -5
-0.25AAA/-0.25 = -5/-0.25
AAA= 20

AA + AAA= 42
AA + 20 = 42
AA +20 -20 = 42-20
AA= 22

Check
$1AA + $0.75AAA= $37
$1(22)+ $0.75(20)= $37
$22 + $15 =$37
$37 = $37

5 0

3 years ago

Which of these parts of a computer produces an observable result?

Olenka [21]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Find the sum of 2xSquared+3x-4,8-3x, and -5x squared+2

Tomtit [17]

2x^2 +3x -4 + 8 - 3x -5x^2 +2
answer is

-3x^2 +6

hope that helps

8 0

3 years ago

I xyzdS trong đó S là phần mặt 2 2 z x y nằm giữa hai mặt phẳng z = 0 và z = 1

Anni [7]

Step-by-step explanation:

ewtjsgmsgmgdmgqrhwtjwthwtj

$= . { {y1 {11.1 \times 3 { { {?}^{?} }^{?} }^{?} }^{?} }^{2} }^{2}$

vadbstjtwjsgjdgndymarhedvdhstjwtktwdgharjqrjwrjgjtkstjtsjafbsfnafhafbsfhtshqwdgjwjdjdnnxnxifjnrnthrwhst

$22 {y)bvzv \cot( \beta log( \sec( log( \cot( \sec( \beta \alpha \pi \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( \sec( log(?) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) \times \frac{?}{?} }^{2}$

hfzbcEdfgaywjshhsbxbxbxb. seznnxndndnndnxnbxhxududhbdxhhbxhjxjdbnzjsnsnnznzidnxnsbnzjxldkdjdnbx

4 0

3 years ago

-(10(2)-2(8)+5(-1))

tiny-mole [99]

Answer:

Explanation:

−((10)(2)−(2)(8)+(5)(−1))

= −(20−(2)(8)+(5)(−1))

= −(20−16+(5)(−1))

= −(4+(5)(−1))

= −(4+−5)

= −(−1)

= 1

- Mordancy.

8 0

3 years ago

Read 2 more answers