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
nexus9112 [7]
3 years ago
8

What's the Discriminant of X^2-2X-15 ?

Mathematics
1 answer:
Nesterboy [21]3 years ago
3 0
The discriminant is the  secion inside the double parenthasees [()] below in the quadratic formulat which is
x=\frac{-b+ \sqrt{[(b^{2}-4ac)]} }{2a}

the determinant determines or tells whether the answer is real or imaginary
if it is negative, then it is imaginary, if positive, then it is real
 so basically the discriminmant is b^{2}-4ac

so ax^2+bx+c
a=x^2-2x-15

a=1
b=-2
c=-15

subsitute
-2^{2}-4(1)(-15)=4-4(1)(-15)=4+60=64
the discriminant is (-2^{2}-4(1)(-15)) or 64
You might be interested in
In the picture PLEASE HELP
Debora [2.8K]
I believe it's not a function because the input (x) 4 has two outputs(y), 2 and 8.
5 0
3 years ago
A rectangular swimming pool is 15 meters long, 10 1/2
daser333 [38]
V = lwh

15(10.5)(4.5) = 708.75 
7 0
3 years ago
Negative 3 is twice as large as a number,h
alina1380 [7]

Answer:

negative 6 is the answer

Step-by-step explanation:

8 0
3 years ago
2,381,579 expanded form
o-na [289]

2,000,000+300,000+80,000+1,000+500+70+9 is 2,381,579 in expanded form.

7 0
3 years ago
Read 2 more answers
Is –54 ÷ 6 positive or negative?
Zigmanuir [339]

Answer:

Negative

Step-by-step explanation:

  1. –54 ÷ 6 = -9

7 0
3 years ago
Other questions:
  • Water stations will be placed every 400 meters of a 5 - kilometer race. How many water stations are needed? (hint 1 kilo=1,000 m
    5·1 answer
  • What is the sum and product of x^2+12x+32=0? pls help me
    7·2 answers
  • Can anybody help me with number 22?
    14·2 answers
  • Laura has pledges of $5 for each mile she walks in the Juvenile Diabetes Walkathon fundraiser.
    11·1 answer
  • I Need Assistance With These
    8·2 answers
  • How do you add and subtract integers?​
    13·1 answer
  • Identify terms, coefficients, factors, and the constant: 5(2x + 4) + 3x
    6·2 answers
  • The CEO of a large manufacturing company is curious if there is a difference in productivity level of her warehouse employees ba
    8·1 answer
  • Height = 5cm<br> Base = 12cm
    6·2 answers
  • Brainliest involved to the correct answer ❣️
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!