All categories

3 years ago

(Picture) MULTIPLYING MONOMIALS AND BINOMIALS

Mathematics

1 answer:

motikmotik3 years ago

7 0

Answer:

Second option: 81y^4 - 16x^2, the difference of squares

Step-by-step explanation:

(9y^2-4x)(9y^2+4x) is a special product named difference of squares, then we can apply this formula:

(a-b)(a+b)=a^2-b^2, with a=9y^2 and b=4x, then:

(9y^2-4x)(9y^2+4x)=(9y^2)^2 - (4x)^2

(9y^2-4x)(9y^2+4x)=(9)^2 (y^2)^2 - (4)^2 (x)^2

(9y^2-4x)(9y^2+4x)=81y^(2*2) - 16x^2

(9y^2-4x)(9y^2+4x)=81y^4 - 16x^2

You might be interested in

A jar contains 50 tickets for a drawing. Of these, 7 are winning tickets. What are the odds in favor of drawing a winning ticket

Ainat [17]

Answer: 14%

Step-by-step explanation: 7/50 = 14/100 = .14 = 14%

3 0

2 years ago

The original value of a car is $18,000, and it depreciates (loses value) by 15% each year. What is the value of the car after th

Sliva [168]

A reduction of 15% per year means 100-15=85% reducing factor.
1st year: 0.85×18000=$15300.
2nd year: 0.85×15300=$13005.
3rd year: 0.85×13005=$11054.25.
So after 3 years the value of the car is $11054.25 or $11054 to the nearest dollar.

6 0

3 years ago

Help, I wanna pass this iready lesson or im going to get yelled at.

densk [106]

Answer:

1/10 is the correct answer

Step-by-step explanation:

3/5=6/10

7/10-6/10=1/10

7 0

2 years ago

Read 2 more answers

if the following line segment is reflected across the x-axis what are the coordinates new endpoints A.) (-1,-6) and (-3,-2) B.)

Tasya [4]

Answer:

A.) (-1,-6) and (-3,-2)

Step-by-step explanation:

The given line segment has coordinates

(-1,6) and (-3,2)

The mapping for a reflection in the x-axis is

$(x,y)\to (x,-y)$

This implies that;

$(-1,6)\to (-1,-6)$

and

$(-3,2)\to (-3,-2)$

The correct choice is A.

7 0

3 years ago

WILL GIVE BRAINLIEST find the value of r (-4,8), (r,12), m=4/3 (show your work pls)

OLEGan [10]

Answer:

r = 13

Step-by-step explanation:

The first step is to find b from y=mx=b using m=4/3 and (-4,8)

$8=\frac{4}{3}(-4)+b$

After solving the equation, b will equal -16/3 making the final equation be

$y=\frac{4}{3} x-\frac{16}{3}$

Using the equation, you can solve for r.

$12=\frac{4}{3} x-\frac{16}{3}$

This will bring the answer being r = 13

7 0

3 years ago