All categories

3 years ago

Simplify the expression b+2/b^2-4

Mathematics

2 answers:

Lubov Fominskaja [6]3 years ago

8 0

3b because b^2-4= 1/b. So 2/1/b= 2b b+2b = 3b

denpristay [2]3 years ago

6 0

b + 2
b² - 4
b^-1 - 1/2
 1 + 1
b^1 - 2
 2 
b^1 - 2

You might be interested in

A plane flew 193 km in 12 minutes. At a constant speed what was the speed of the air plane at km per hour?

Mrac [35]

Answer:

965 km per hour

Step-by-step explanation:

The total distance flown was 193km which was flown at constant speed and took 12 minutes. Dividing 193 by 12 gives us the km per minute

193/12 = 16.0833333

but this isn't the correct answer, this is in km per minute, and the question asked for km per hour. Since there are 60 minutes in an hour, multiply the answer by 60 to calculate how far the plane flew per hour.

16.083333333(60) = 965

7 0

3 years ago

Which of the following is equal to the rational expression when x does not equal -2 or -6?

MissTica

Answer:

B. 3 / (x+6)

Step-by-step explanation:

3(x+2)/(x+6)(x+2) = 3 / (x+6)

6 0

3 years ago

What are some ways you can make a rectangle 10,000 cm squared (I NEED A AWNSER QUICK)

lidiya [134]

Answer:

2 longer sides would be 4000 each, so that's 8000 total

and the 2 shorter sides could be 1000 each, so that's 2000 total

8000+2000=10,000

Step-by-step explanation:

8 0

3 years ago

\[f(x)=\sqrt{x ^4-16x ^{2}}\]

marusya05 [52]

$f ( x ) = \sqrt{ x^{4} -16 x^{2} }$
a ) The domain:
x^4 - 16 x² ≥ 0
x² ( x² - 16 ) ≥ 0
x² - 16 ≥ 0
x² ≥ 16
x ∈ ( - ∞, - 4 ] ∪ [ 4 , + ∞ )
b ) f ` ( x ) = $\frac{1}{2 \sqrt{x ^{4}-16 x^{2} } } * ( x^{4}-16 x^{2} )` =$
= ( 2 x³ - 16 x ) / √(x^4 - 16 x²)
c ) The slope of the tangent line at x = 5:
f ` ( 5 ) = ( 2 * 125 - 16 * 5 ) / √ ( 625 - 400 ) = 170 / 15 = 34 / 3
The slope of the line normal to the graph at x = 5:
m = - 3 / 34

4 0

3 years ago

GIVING BRAINLIEST TO PERSON AHO ANSWERS FIRST!!

zavuch27 [327]

Please refer to the photograph attached for the answer
Hope you find the answers correct
Sorry you will find it really small please zoom in to see the answer to this question
Sorry for the inconvenience about the small answers

4 0

3 years ago