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
nata0808 [166]
3 years ago
15

Solving Quadratic Equations by Factoring

Mathematics
2 answers:
mr Goodwill [35]3 years ago
8 0

Answer:

x=-7      x=2

Step-by-step explanation:

x^2+5x-14=0

Factor

What 2 numbers multiply to -14 and add to 5

7*-2 = 14

7 -2 =5

(x+7) (x-2) = 0

Using the zero product property

x+7 = 0   x-2 =0

x=-7      x=2

Karolina [17]3 years ago
4 0
Answer:
x=(2,-7)

Instruction:

I struggled with factoring too, it’s not easy to learn, but there are a few tricks i know that make factoring equations with a 2 power very simple!

Before you begin factoring, the equation must be equal to zero.

The first trick:

Write down “ (x )(x ) = 0 .” This is the outline for your answer.

The second trick:

In equations like these, there are always going to be some combination of two plus or minus symbols. The most important one is the second. If the second sign is a plus sign, the equations will have the same sign as the first sign in the equation. If the second sign is a minus sign, then the signs in the new equation will be different.

(x - )(x + ) = 0

The third trick is to find the numbers that are subtracted from x. These numbers are positive or negative based on the sign in the equation next to their placement, and are a multiple of the y-intercept value (the 3rd number, -14). The sum of these numbers must be equal to the slope (positive 5)
In this case, the sum of -2 and +7 is equal to the slope, and the product of these numbers is -14. Fill these in respectively.

(x - 2 )(x + 7 ) = 0

Now we can infer the answers from here. The solutions to this equation are equal to the opposite of the numbers.

The opposite of -2 is +2, or just 2, and the opposite of 7 is -7.

x = (2,-7)

This can be checked by plugging in the numbers to the last equation. Lets check 2 first.

((2) -2)(x+7)=0
(0)(x+7)=0
0=0
2 is correct.

(x-2)((-7)+7)=0
(x-2)(0)=0
0=0
7 is correct.

I have know proven my answer to be correct! Have a nice day

-Blake :)
You might be interested in
What is a name for a marked angle ? Answers to choose from :
katen-ka-za [31]

Answer:

Angles are named in two ways. You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle. You can also name angles by looking at their size.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
ABCD is a rhombus. If m<1=122, then what is the measure of <2 and <3
Svetach [21]
M < 2 will be 180 - 122 =  58 degrees

< 3 is opposite < 1 so it will be = 122 degrees
4 0
3 years ago
Kaylee has 2 gallons each of red and blue paint, and 1 gallon each of orange and green paint. She paints her bedroom with these
Aleks04 [339]

Answer:

3( 73/84 )left over

Step-by-step explanation:

She had 6 gallons in total

2/3+1/4+1/2+5/7=179/84   =  2 ( 11/84)

6/1-179/84 = 325/84    =  3(73/84)

She used  179/84

She have left 325/84

179/84   +  325/84 = 6

   With mixed numbers:

2  11/84  

3  73/84

 2+3=5                11/84+73/84= 84/84 =1

5+1=6

 

8 0
3 years ago
Tyler took a total of 16 quizzes over the course of four weeks. How many weeks of school will Tyler have to attend this quarter
wlad13 [49]

Answer:

he will have to go one more week and all together it would be five weeks

Step-by-step explanation:

16/4=4

you need four more to get to 20, and if he does 4 quizzes a week he only needs one more week.

7 0
3 years ago
If I get played 9$ an hour and I work 8:15 a day how much do I get for 5 days
Thepotemich [5.8K]
First of all, 15 minutes is 1/4 of an hour.  So 8:15 is 8.25 hours.

(8.25 hours/day) x ( 9 $/hour) x (5 days) = $371.25


7 0
3 years ago
Read 2 more answers
Other questions:
  • Which word best describes the degree of overlap between the two data sets?
    9·2 answers
  • 2 − 10n = 2 + 4n<br> What does n equal?
    14·2 answers
  • Money Flow The proceeds from the sale of a building will yield a uniform continuous flow of $10,000 a year for 10 years. Find th
    13·1 answer
  • Mrs. Evans drove 24 miles on 3 gallons of gas. What is her unit rate in miles per gallon??
    5·1 answer
  • Evaluate the integral using integration by parts with the indicated choices of u and dv. (use c for the constant of integration.
    11·1 answer
  • When buying a pair of jeans, Rick paid 8% of the purchase price in sales tax. If the price of the jeans was $24.50, how
    13·1 answer
  • Normal simple question and pls follow​
    9·2 answers
  • I need help please help me I don’t know what to don’t
    11·1 answer
  • How many 5 minute intervals are between 4:35 pm and 5:00 pm
    13·2 answers
  • How do you find the area of a parrelogram
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!