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
Inessa [10]
3 years ago
11

Solve quadratic formula x-2x-15=0 the first x is squared

Mathematics
2 answers:
solniwko [45]3 years ago
8 0
x^2-2x-15=0\\
x^2-5x+3x-15=0\\
x(x-5)+3(x-5)=0\\
(x+3)(x-5)=0\\
x=-3 \vee x=5

Oduvanchick [21]3 years ago
6 0
You said that  x² - 2x - 15 = 0 .

You could factor the left side:

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

This equation is true if either of the factors is zero.

First factor:
x + 3 = 0
<u>x = -3</u>

Second factor:
x - 5 = 0
<u>x = 5</u>



You might be interested in
Simplify by combining like terms -17+2(6x-1)+5
earnstyle [38]

\huge\boxed{12x-14}

Start with the original expression.

-17+2(6x-1)+5

Use the Distributive Property — multiply 2 by both 6x and -1.

-17+12x-2+5

Combine the like terms — add up all the constants.

-14+12x

Reorder the terms.

\large\boxed{12x-14}

5 0
3 years ago
Read 2 more answers
Which choices are equivalent to the expression below √16 • √9
Luda [366]

Answer:

12

Step-by-step explanation:

=> √16 • √9

=> Take square roots

=> 4 • 3

=> 12

8 0
2 years ago
827 divided by 1120
KiRa [710]

It can be the last one, 827 over 1120

Hope that helps

4 0
3 years ago
Read 2 more answers
Write 2/3 as a decimal.
Mekhanik [1.2K]

Answer:

0.67

Step-by-step explanation:

2/3 = 0.6666

0.6666 rounded to the nearest hundredth = 0.67

3 0
3 years ago
The local ice cream shop offers 3 different types of cones and 14 different flavors of ice cream. How many possible ice cream co
Likurg_2 [28]
3*14 

42 possible combinations. <span />
6 0
3 years ago
Read 2 more answers
Other questions:
  • Please need help on this
    6·1 answer
  • Adding &amp; subtracting fractions
    15·2 answers
  • What is the answer for | 3x - 2 | = 8 and | x + 1 | = 1
    12·1 answer
  • -7x-13&gt;_8 as a number line
    9·2 answers
  • If x=-3,what is the value of |x-4|-x^2
    6·1 answer
  • The bat population in a certain Midwestern county was 270,000 in 2012, and the observed doubling time for the population is 34 y
    15·1 answer
  • Please help me . i will help you whenever you want
    6·1 answer
  • PLEASE HELP... WILL GIVE BRAINLIEST
    14·2 answers
  • What is the area of a rectangle that is 11ft by 2ft?
    7·2 answers
  • Hello can someone please help me with this
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!