All categories

3 years ago

How do i factor a2-b2

Mathematics

2 answers:

bagirrra123 [75]3 years ago

6 0

$(a^2-b^2) = (a+b)(a-b)$

You can use this equation for any numbers or variables in the form a2 - b2.

Ainat [17]3 years ago

6 0

(a^-b^)= (a-b)(a+b) that sad. remember this is a form. you will see this letters will be change a numbers.

You might be interested in

Someone explain to me if this is correct?

ddd [48]

Answer:

Yes, that is correct.

Step-by-step explanation:

W = x

L = ?

A = x^2 + 12x

(x^2 + 12x)/x = x + 12

L = x + 12

Subbing in 10 for each X, we get:

Perimeter: 64

2(10) + 2(10 + 12) = 20 + 44 = 64

Area: 220

10 * 22 = 220

8 0

3 years ago

Read 2 more answers

Caleb has an offer from a credit card issuer for 0% APR for the first 30 days and 17.68%

svetlana [45]

Solution:- Answer is 19.33%

Annual percentage rate (APR) is the yearly rate for a price which have to pay for borrowing money through credit card.

Here Caleb has an offer from a credit card issue for i=0% APR for the first 30 days.

now, effective interest rate for n= 30 days

= $r=(1+\frac{i}{n} )^n-1\\\Rightarrow\ r=(1+\frac{0}{30} )^{30}-1\\\Rightarrow\ r=(1+0)^{30}-1=1-1=0$

After 30 days APR =17.68%=0.1768

n=365-30=335 days

now the effective interest rate for n=335 days

= $r=(1+\frac{i}{n} )^n-1\\\Rightarrow\ r=(1+\frac{0.1789}{335} )^{335}-1\\\Rightarrow\ r=(1+0.000527)^{335}-1=(1.000527)^{335}-1=1.1933-1=0.1933$

=19.33%

So the effective interest rate for 365 days =0+19.33% =19.33%

So fourth option is correct.

6 0

3 years ago

Read 2 more answers

Can anyone solve this? I'm having a hard time

bearhunter [10]

A good app that would help you with math is photomath

8 0

3 years ago

Read 2 more answers

1. (2,7); m=-4 What’s the answer?

Nataly_w [17]

Answer:

4x + y = 15 or y = -4x + 15

Step-by-step explanation:

7 = 2[-4] + b

-8

15 = b

$y = -4x + 15$

If you want it in Standard Form:

y = -4x + 15

+4x +4x

___________

4x + y = 15 >> Line in Standard Form

I am joyous to assist you anytime.

4 0

3 years ago

X-9= 1/4x + (1/4x + 12) + (1/4x - 3) what’s that answer?

konstantin123 [22]

Answer:

x = 72

Step-by-step explanation:

Make the problem simpler by eliminating the fractional coefficients:

x-9= 1/4x + (1/4x + 12) + (1/4x - 3), when multiplied by 4, becomes:

4x - 36 = x + x + 48 + x - 12

Summing up all the x terms, we get:

4x - 2x - x = 48 - 12 + 36

Then x = 72

7 0

3 years ago