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valentina_108 [34]
4 years ago
11

Please write an algebraic proof showing that (a+b)(a-b)=a^2-b^2

Mathematics
1 answer:
murzikaleks [220]4 years ago
5 0

Answer:

(a+b)(a-b)

a(a - b) + b (a - b)

= a^2 - ab + ab - b^2

=a^2 - b^2

Step-by-step explanation:

  1. distribute a(a-b)
  2. distribute b(a-b)
  3. add like-terms

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5,

4.66

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3 0
3 years ago
Which of the following is equivalent to 2 stretching below? (14-9i)+(2+3i)..​
Flauer [41]

Answer:

(14-9i)+(2+3i) = 16-6i

Step-by-step explanation:

We need to find the equivalent of (14-9i)+(2+3i).

We need to add the two expressions.

(14-9i)+(2+3i) = 14+2 -9i+3i

= 16-6i

Here, the real part is 16

The imaginary part is -6

Hence, the required answer is equal to 16-6i.

7 0
3 years ago
Given that g(y) = y2 - 1, find g(a - 1).<br>Give your answer in its simplest form.​
AlekseyPX

Answer:

a^2 - 2a.

Step-by-step explanation:

Replace the y in g(y) by a - 1 and simplify.

g(a-1) = (a - 1)^2 - 1

= a^2 - 2a + 1 - 1

= a^2 - 2a.

8 0
4 years ago
Helppppppp !!!!!!! <br><br>A = 2<br>B = 4<br>C = 3<br><br>6A × B - 4C + 1A​
jek_recluse [69]
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◇◆□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□◆◇

6A × B - 4C + 1A

6(2) × 4 - 4(3) + 1(2)

12 × 4 - 12 + 2

48 - 12 + 4

36 + 2

38

◇◆□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□■□◆◇

\:

5 0
3 years ago
A triangle has three angles that measure 15 degrees, 85 degrees and (4x - 20). What is the value of x?
Lostsunrise [7]
180=15+85+(4x-20)
180-15-85=4x-20
80=4x-20
4x-20=80
4x=80+20
4x=100
x=100/4
x=25
5 0
3 years ago
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