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
kicyunya [14]
3 years ago
7

Solve this x2 – 8x + 15

Mathematics
2 answers:
STALIN [3.7K]3 years ago
6 0

Answer:

x=5    x=3

Step-by-step explanation:

x^2 – 8x + 15

What two numbers multiply to 15 and add to -8

-5*-3 = 15

-5 +-3 = -8

(x-5) (x-3) =0

Using the zero product property

x-5 =0         x-3 =0

x=5                x=3

sammy [17]3 years ago
3 0

Answer:

x=5 or x=3

Step-by-step explanation:

find two numbers that add up to the middle number (-8) and multiply to equal the last number (15)

in this case -5 and -3 add to be -8 and multiply to be 15

add these numbers in place of -8x

x^2-5x-3x+15 now add parentheses

(x^2-5x) (-3x+15) take out common factors

(x-5)(x-3) now make each set of parentheses equal to zero

x-5=0 x-3=0 now solve

x=5 x=3

You might be interested in
Olivia bought a beach towel for $9.95
horsena [70]

Answer:

$23.41

Step-by-step explanation:

Add the cost of each item together.

$9.95 + $13.46 = $23.41

And there may have been sales tax as well but this information was not provided so it is not needed in the answer.

8 0
3 years ago
Please solve this for me please
Natalka [10]
I’m having trouble reading your equations is it
(2i-1/x+1)^(4)-13(x-1/x+1)^(2)+36=0
I just want to confirm before doing it just comment if that’s the correct equation.
8 0
3 years ago
the area of Alaska is about 2 x 10 to the 6 power square kilometers the area of Rhode Island is about 4 x 10 to the 3rd power sq
hram777 [196]

Answer:

i think the answer is A: 0.0005

Step-by-step explanation:

i think so because when i divided alaska by rhode island, i got 500000000. so i guess you move the decimal

3 0
2 years ago
Square, one side length 2& 11 mile:
hodyreva [135]
That would be the one and only 22
8 0
3 years ago
What's the equation of the line passing through the points ​(3​,8​) and ​(-2​,-17​)?
erma4kov [3.2K]

Answer:

<u>y=5x-7</u>

Step-by-step explanation:

1. First the slope: -17-8/-2-3= -25/-5=5

2. What is your line equation now? y=5x+b

3. Replace the x and y value with one of the coordinate points: 8=5(3)+b

4. Solve for b: 8=15+b  -7=b

5. Substitute it in the equation: y=5x-7

Hope this helps!

3 0
3 years ago
Other questions:
  • The capacity of a beaker is 0.1 liter converted to millimeter
    6·1 answer
  • Jessica has a rectangular poster. The poster is 1.8 meters long and 1.5 meters wide. What is the area of the poster in square ce
    10·2 answers
  • Erin is buying floor tile to put in a room that is 10 ft by 15 ft. She has chosen tiles that are 18 in by 18 in. Assuming that s
    8·1 answer
  • Jack bought 4 dozen eggs at $10 per dozen. 6 were broken. what percent of his money goes to waste
    8·1 answer
  • The two way table shows the number of books of each type in Eilza's home.
    14·1 answer
  • If f(x) = -4x + 2 and g(x) = sq root X – 8,<br>what is (fºg)(12)?​
    13·1 answer
  • Help me?! Solve for x
    15·2 answers
  • Robert owns two dogs. Each day, one dog eats
    6·1 answer
  • Write y−9=−6(x+9) in slope intercept form
    12·1 answer
  • -1/4 (24ab + 8c) please help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!