All categories

3 years ago

What is the simplified expression for –2a^2b + a^2 – 5ab + 3ab^2 – b^2 + 2(a^2b + 2ab)?

1 answer:

3 0

$-2a^2b + a^2 - 5ab + 3ab^2 - b^2 + 2(a^2b + 2ab) \\ =-2a^2b + a^2 - 5ab + 3ab^2 - b^2 + 2a^2b + 4ab \\ = a^2 - ab + 3ab^2 - b^2$

You might be interested in

What is 1,537 times 242

Andrew [12]

1537*242 = 371954

If u r not sure u can always use a calculator (don't use it if ur not allowed to)! Anyway

Hope I helped:P

6 0

3 years ago

Read 2 more answers

The number of coffee shops in a certain country can be modeled by the quadratic function f(x)105x²+680x+4296, where f(x) is th

grigory [225]

A. X is the number of years after 2000

2006-200 = 6 years.

Replace x with 6 and solve:

105(6)^2 + 680(6) + 4296 = 12,156

Answer for part a: 12,156

Answer for part B.
There was just over 12,000 in 6 years , to get to 21,500 would be a little over 9,000 more 9/12 = 0.75

6 years x .75 = 4.5 years

6 + 4.5 = 10.5 years round to 10 years for estimating purposes

Answer for part b: about 10 years

7 0

2 years ago

A sphere rolls up an inclined plane of inclination angle 30 degree. At the bottom of the incline the center of mass of the spher

Zigmanuir [339]

Answer: The sphere is 0.002548 cm travel up the plane.

Step-by-step explanation:

Since we have given that

Inclination angle = 30°

Translational speed = 0.25 m/s

As we know that

$KE=0.5\times lw^2=PE$

and

Length of solid sphere is given by

$l=\dfrac{2Mr^2}{5}$

So, it becomes,

$KE=0.5\times \dfrac{2Mr^2}{5}w^2=Mgd\sin \theta$

And $0.25\ m/sv=rw$

So, it becomes,

$1\times (0.25)^2=5\times d\times 9.81\times \sin 30^\circ\\\\0.0625=49.05d\times \dfrac{1}{2}\\\\\dfrac{0.125}{49.05}=d\\\\d=0.002548$

Hence, the sphere is 0.002548 cm travel up the plane.

5 0

4 years ago

According to NASA, an average of one cataloged piece of space debris has fallen back to Earth each day for the past 50 years. Su

konstantin123 [22]

Have a great day :)

4 0

3 years ago

7/9 - 2/8 times 4/9 sum in simplest form

Nady [450]

7/9 -2/8 * 4/9 =

7/9 -1/4*4/9 =

7/9 -1/9 = 8/9

Answer: 8/9

7 0

3 years ago