1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nadya [2.5K]
3 years ago
12

Factorise the following.​

Mathematics
1 answer:
spin [16.1K]3 years ago
3 0

Answer:

x²(9x– 11)(9x + 11)

Step-by-step explanation:

81x⁴ – 121x²

The expression can be factorised as follow:

81x⁴ – 121x²

x² is common to both term. Thus:

81x⁴ – 121x² = x²(81x² – 121)

Recall:

81 = 9²

121 = 11²

Therefore,

x²(81x² – 121) = x²(9²x² – 11²)

= x²[(9x)² – 11²]

Difference of two squares

x²(9x– 11)(9x + 11)

Therefore,

81x⁴ – 121x² = x²(9x– 11)(9x + 11)

You might be interested in
If I am 98.3 miles away from Point B, and point B. Is 28,468 miles from point A. how far have i traveled and how far do i have l
salantis [7]

Answer:

28566.3

Step-by-step explanation:

98.3 + 28,468 = 28566.3

7 0
3 years ago
Efectúa la siguientes operaciones 3254+535​
fredd [130]

Answer:

3789

Step-by-step explanation:

3 0
3 years ago
Type the correct answer in each box. The volume of a cube is given by and the total surface area of a cube is given by , where s
larisa86 [58]

Answer:

hope this will help you a lot

7 0
3 years ago
What 2 numbers add to -3 and multiply to 2
serg [7]
We need to look at factors of 2, which are only 2 and 1... How do we get them to add to -3? Well, they have to be negative.

-2 + -1 = -3

What about the multiplication? A negative × a negative = a positive, so

-2 × -1 = 2

So your answer is

-2 and -1
6 0
3 years ago
Use the given graph to determine the limit, if it exists.
Galina-37 [17]
<span>"A coordinate graph is shown with a downward sloped line crossing the y axis at the origin that ends at the open point 3, -1" → this is the left side of the graph, so the limit is -1.</span>
6 0
3 years ago
Other questions:
  • 3x+2y=12+y 4y-7x=10 solve
    13·2 answers
  • The perimeter P of a regular hexagon is 66 in. What is the length x of each side
    7·1 answer
  • The coordinates of the vertices of a polygon are shown below.
    10·2 answers
  • Find the surface area of the pyramid to the nearest whole number.
    8·1 answer
  • Mr. Norris wrote a doubles fact It has a greater than 6. The numbers that he sum than 6. What fact added are each less might he
    6·2 answers
  • Answer #3 for 30 points FAST
    13·2 answers
  • 1. Find the error and correct each problem: Jasmine wrote 100 - 10(4 + 2f) = 100 -<br> 40 + 20f *
    8·1 answer
  • you need to read the directions before you answer!!!!!! It's scatter plots and I need it done by 4:30 my time!!!!!!! if it is po
    14·1 answer
  • Can u pls help me with this question ​
    15·1 answer
  • Benji surveyed 120 people in his town. He found out that 45 people go to the park everyday.what part of the town population prob
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!