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
faltersainse [42]
3 years ago
13

What is the factorization of the polynomial below? -x^2-15x-56

Mathematics
1 answer:
stellarik [79]3 years ago
7 0

Answer:

Option C. (x+8)(x+7)

Step-by-step explanation:

we have

-x^2-15x-56

Find the roots of the quadratic equation

equate the equation to zero

-x^2-15x-56=0

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

-x^2-15x-56=0

so

a=-1\\b=-15\\c=-56

substitute in the formula

x=\frac{-(-15)\pm\sqrt{-15^{2}-4(-1)(-56)}} {2(-1)}

x=\frac{15\pm\sqrt{1}} {-2}

x=\frac{15\pm1} {-2}

x=\frac{15+1} {-2}=-8

x=\frac{15-1} {-2}=-7

The roots are

x=-8 and x=-7

so

The quadratic equation in factored form is equal to

-x^2-15x-56=(x+8)(x+7)

You might be interested in
What is a mathematical expression indicating to a root of a quantity?
vladimir1956 [14]
Find out smarty don’t cheat
7 0
3 years ago
What condition renders this true, where S and T are sets?
daser333 [38]

Answer:

There are no sets S, T for which

S \cup T^c=S^c\cap T

holds

Step-by-step explanation:

Let the set A be

A=S\cup T^c

By de De Morgan's Law

A^c=S^c\cap ((T)^c)^c

But

((T)^c)^c=T

A^c=S^c\cap T

We conclude that

S \cup T^c=S^c\cap T\Rightarrow A=A^c

which is a contradiction because no set is equal to its complement.

3 0
3 years ago
A school took 4 buses and 12 kids in cars to
Solnce55 [7]

Answer:

54

Step-by-step explanation:

First, subtract the kids in the cars. These kids aren't on buses.

228 - 12 = 216 kids on buses

Next, divide the 216 kids into 4 buses.

216 / 4 = 54

There were 54 kids on each bus.

7 0
3 years ago
Read 2 more answers
Help, I need help with this math question as soon as possible!!
mina [271]

Answer:

Step-by-step explanation:

4x what = 98

7 0
3 years ago
PLS HELP I NEED HELPPPP
MakcuM [25]

Answer:

942.7 is the answer

Step-by-step explanation:

r then 7

7 0
3 years ago
Read 2 more answers
Other questions:
  • A cookie recipe calls for 1 cup of white sugar and 3 cups of brown sugar
    14·1 answer
  • What is 11/16+4/10-3/4
    10·2 answers
  • Need help with this fast I think it’s d but it might be a.
    9·1 answer
  • The 6x −3y= 24 represents Shari’s distance from home, y in blocks, on her run across town over time, x, in minutes. What is the
    6·1 answer
  • If anyone could please help with this the teacher did not explain in a way I could understand please ignore the work I did I att
    6·1 answer
  • Two questions please help?
    5·2 answers
  • if the side of a traingular fiels is in ratio of 6:9:10. if it perimeter is 2500m what is the area of that field​
    10·1 answer
  • PLEASE HELP! PICTURES BELOW! I AM CRYING AND FEEL USELESS PLLLLLLLEEEEEEEEAAAAAAAAAASSSSSEEEEEEEE
    15·1 answer
  • Help is very much needed :)
    9·1 answer
  • What is the equation that matches the graph?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!