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
soldier1979 [14.2K]
4 years ago
12

If (x + 1)(x-3) = 5, then which of the following statements is true?

Mathematics
1 answer:
bixtya [17]4 years ago
5 0

Answer:

x=−2 or x=4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

x2−2x−3=5

Step 2: Subtract 5 from both sides.

x2−2x−3−5=5−5

x2−2x−8=0

Step 3: Factor left side of equation.

(x+2)(x−4)=0

Step 4: Set factors equal to 0.

x+2=0 or x−4=0

x=−2 or x=4

You might be interested in
PLEASE I NEED HELP! THANK YOU.
Elden [556K]

First set up a linear equation  and using the x and y values in the table see if it solves.

It doesn't solve so we know it isn't linear. ( I won't show all those steps because they aren't needed.)

Using the quadratic formula y = ax^2 +bx +c

Build a set of 3 equations from the table:

C is the Y intercept ( when X is 0), this is shown in the table as 6

Now we have y = ax^2 + bx + 6

-2.4 =4a-2b +6

1.4 = a-b +6

Rewrite the equations

a=b/2 -2.1

1.4 = b/2-2.1 +6

b = 5

a = 5/2 -2.1 = 0.4

replace the letters to get y = 0.4x^2 + 5x +6

4 0
3 years ago
Marking brainliest <br><br> Help out <br><br> Can y’all use this as a sentence
garri49 [273]

Answer: Lemme get them socials

Step-by-step explanation: Was goof

4 0
3 years ago
Read 2 more answers
Simplify the expression to a polynomial in standard form.<br> (x-2)(x2 +7x +4)
goldenfox [79]

Answer:

Step-by-step explanation:

(x  - 2)(x² + 7x + 4) = x(x² + 7x + 4) - 2*(x² + 7x + 4)

                              = x*x² + x*7x + 4*x  - 2*x² -2* 7x -2* 4

                               = x³ + 7x² + 4x - 2x²  -14x -8

                                = x³ + <u>7x² - 2x²</u>    <u>+  4x - 14x</u> - 8

                                = x³ + 5x² - 10x - 8

5 0
3 years ago
Jada walks up to a tank of water that can hold up to 15 gallons. When it is active, a drain empties from the tank at a constant
zloy xaker [14]

Answer:

3 minutes 6 gallons of water is gone so therefor it would take 6 complete minutes but 3 more minutes

Step-by-step explanation:

8 0
3 years ago
Find value of y as well as other angles​
Dahasolnce [82]

Answer:

Step-by-step explanation:

Ok but where is the question

4 0
3 years ago
Read 2 more answers
Other questions:
  • Hypoteneous base and what is the other ​
    15·2 answers
  • I need hep please help me (math)
    5·1 answer
  • What is the mean of the data set 17,24,26,13
    11·2 answers
  • on Monday, Mr. James used 25 2/3 ft of material to make placemats. if each placemat required 3 1/4 ft. of material, how many pla
    15·1 answer
  • NEED HELP ASAP!
    14·1 answer
  • A mysterious flying superhero known as Blue Sky protects the good citizens of Allenville. Unknown to these citizens, Blue Sky is
    6·1 answer
  • Given that the perimeter of the equilateral triangle below is 63 , solve for x
    11·1 answer
  • What is 32/36 in simplest form?
    6·2 answers
  • ILL MARK BRAINLIST IF ITS RIGHT.
    7·1 answer
  • Use the zero x = 5, to help find the remaining zeros of x4 - 4x3 - 14x² + 36x + 45. Select one:
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!