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
galben [10]
3 years ago
7

A(x+1)(x-1)+b(x-2)(x+1)+(x+1)^2=9x-x-10 What is a+b?

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
4 0

a(x+1)(x-1)+b(x-2)(x+1)+(x+1)^2=9x^2-x-10

(x+1)(a(x-1)+b(x-2)+(x+1))=(x+1)(9x-10)

a(x-1)+b(x-2)+x+1=9x-10

Now this equation is much simpler!

(a+b)x-a-2b+x+1=9x-10

(a+b)x-a-2b=8x-11

(a+b-8)x-a-2b-11=0

a+b-8=(a+2b-11)/x

I can't solve it 3 variables and 1 equations means infinite answers so yea.

You might be interested in
Help me with ma work pls
Serga [27]
Simply you would do

45+10 time the number of days

So

45+10 x 2 and then you would put the answer in the next Collin
5 0
3 years ago
Read 2 more answers
Round 13 to the nearest 10.
mr Goodwill [35]

Round down to 10. 13 goes to 10.

3 0
3 years ago
Read 2 more answers
Can someone help me? It's urgent and thank you!
nordsb [41]

Answer:

the first one

Step-by-step explanation:

3 0
3 years ago
Match each expression with the equivalent expression.
otez555 [7]
Hope this helps good luck

3 0
3 years ago
Help with one more please
dedylja [7]
X² - 3x - 40
(x - 8) (x + 5)
3 0
3 years ago
Other questions:
  • Two events, X and Y, are independent of each other. P(Y) = 5/6 and P(X and Y) = 1/3. What is P(X) written as a decimal? Round to
    5·2 answers
  • A turtle walking at an average speed of 3/10 mile per hour takes 13/20 hour from its home how long will take if the turtle doubl
    12·1 answer
  • Mr. king brought a carpet for his dining room that measured 3 1/2 yards by 5 3/4 yards how much carpet did Mr.king buy
    9·1 answer
  • How do you do this..........
    14·1 answer
  • Which is an equation of a circle with center (-10, 6) and radius 8?
    8·1 answer
  • Which statements are true regarding the area of circles and sectors? Check all that apply.
    7·2 answers
  • What is the image of point (2,8) for mapping (x,y), (x-8,y+1)
    12·1 answer
  • I Need A Fast Response!
    14·2 answers
  • A circle is painted in the center of a basketball court. If the diameter of the circle is 12 feet, what is the approximate amoun
    14·1 answer
  • Find the probability of drawing a 10 from a standard deck<br> of 52 cards,
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!