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
o-na [289]
3 years ago
9

Factorising Quadratics

Mathematics
2 answers:
umka21 [38]3 years ago
5 0
Quadratic formula where:
ax ^{2}  + bx + c
\frac{ - b + { \sqrt{b^{2} - 4ac } }}{2a}
\frac{ - b -  \sqrt{b { }^{2} - 4ac } }{2a}
do both do get the roots of the equation
Ulleksa [173]3 years ago
3 0

Answer:


Step-by-step explanation:

A short answer is that you cannot factor this the way you are trying to do it. What to do to go on is a question. You could use the quadratic formula to get some sort of answer but if factoring is your only option, forget about it.

Here's how you can check.

  • a = 12
  • b = 1
  • c = -15

There is a part of the quadratic solution is the sqrt(b^2 - 4*a*c). In order to be factorable, this sqrt must result in a perfect square.

sqrt(1 - 4(12)(-15) ) = sqrt( 1 - - 720) = sqrt(721)

This is anything but a perfect square. (721 does factor, however, into 7 * 103). I03 is prime. So the long and short of it is, there's no way it will factor.

You might be interested in
At a track meet, 50 people ran the 100-meter dash. 2 people finished in 11 seconds, 5 people finished in 12 seconds, 8 people fi
adoni [48]
You have to do a histogram here:

<span>11 sec: 2 people: probability is 2/50 = 1/25 = 0.04
12 sec: 5 people: probability is 5/50 = 1/10 = 0.1
13 sec: 8 people: probability is 8/50 = 4/25 = 0.16
</span>14 sec: 10 people: probability is 10/50 = 1/5 = 0.2
15 sec: 21 people: probability is 21/50 = 2.38
16 sec: 2 people: probability is 2/50 = 1/25 = 0.04
17 sec: 2 people: probability is 2/50 = 1/25 = 0.04
6 0
3 years ago
What's the probability you roll the same number twice on a regular dice?
jekas [21]
1/6 because the first number that you roll doesn't matter so it depends on the 2nd roll, in which the probability of rolling a specific number is 1/6
4 0
3 years ago
Help again quick please!
Dennis_Churaev [7]

Answer:

2/3

Step-by-step explanation:

5/6 - (1/8÷3/4)

=5/6 - (1/8 × 4/3)

=5/6 - ( 1/6)

=4/6

=2/3

8 0
2 years ago
Read 2 more answers
What is 3/4 equal too
Dovator [93]
3/4 is equal to .75 .................................
3 0
3 years ago
Read 2 more answers
A boat traveled 27 miles in 2 hours. At this rate, how many miles will the boat travel in
Art [367]
6.75 miles per half hour !!!!!!!
7 0
3 years ago
Read 2 more answers
Other questions:
  • How many times does 7 go into 2,400
    13·2 answers
  • what is the answer to this problem. lily built an orange shelf and a brown shelf to hang in her room. the orange shelf is 5 feet
    8·1 answer
  • If two triangles are congruent, which of the following statements must be true? Check all that apply.
    15·2 answers
  • In what quradrant does the terminal side of 0 lie when tan 0 &lt; 0 and sin 0 &lt; 0
    6·1 answer
  • A high school track is shaped as a rectangle with a half circle on either side.Jake plans on running four laps. How many meters
    7·1 answer
  • A penny falls from the top of Hard Rock Stadium The height of the penny after a seconds is given by f(x) = 350 - 16x²
    13·1 answer
  • Are the following lines parallel,perpendicular,neither <br>y =2x-1<br>y=-1/2x+3<br>​
    15·1 answer
  • Pls find the area of this polygon!!!
    9·1 answer
  • The ratio measures of two complementary angles is 5:4. what is the measure of the lager angle ​
    14·1 answer
  • Can anybody help me with my schoolwork right now?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!