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
Ann [662]
3 years ago
14

I need some help with this rational equation. It's supposed to = -1, but for some strange reason I keep getting x^2 +2x = -1.

Mathematics
1 answer:
Rasek [7]3 years ago
7 0

This one is so easy that your brain refuses to accept it.
It's looking for a harder answer, but can't find it !

You're totally correct, as far you went.     x² + 2x does = -1

Now add ' 1 ' to each side:     x² + 2x + 1 = 0

Can you factor that quadratic ?
Can you mash it through the quadratic formula ?

Actually, it's the simplest possible perfect square.

                                       x² + 2x + 1  =  (x + 1)²

So the solutions of     x² + 2x + 1 = 0  are both   x = -1 .

Don't say anything.
I know it's embarrassing.

You might be interested in
Find dy, dx if f(x) = (x + 8)3x. 3xln(x + 8) the product of the quantity 3 times the natural log of the quantity x plus 8 plus 3
boyakko [2]
F(x) = 9x^2(x + 8)^2
8 0
3 years ago
Read 2 more answers
What is the volume of this rectangular prism?
Ainat [17]
L x b x h
1 1/2 x 3/12 x 2/12
13 1/8. I THINK
6 0
3 years ago
Read 2 more answers
Please help me :((((((((
romanna [79]

Answer:

Fraction Form: 1/10

Step-by-step explanation:

Decimal Form: 0.1

7 0
3 years ago
Write an equation in standard form that has a slope of - and a y-intercept of -2.
Setler79 [48]

Answer:

y= 3x-2

Step-by-step explanation:

standard form

y= mx + c

 c represents y intercept

m represents slope or gradient

y= 3x-2

The slope is 3 and the y intercept in -2

7 0
2 years ago
Please help solve! 20 pts
IRISSAK [1]

Answer:

x=6° , z=102°

Step-by-step explanation:

78=14x+22

56=14x

x=6

180-78=z

z=102

7 0
3 years ago
Other questions:
  • Anybody know the answer to this?
    8·2 answers
  • find the area of field in a form of trapezium whose parallel sides are 10 and 12 and perpendicular distance between them is 6 me
    11·1 answer
  • I need help, can someone help
    6·1 answer
  • For school fundraiser, you are selling movie tickets and snacks. Each movie ticket is $5 and each snack is
    10·1 answer
  • Which expression is equivalent to n + n - 0.18n?
    8·2 answers
  • Write an equation for a line parallel and a line perpendicular to the given line
    10·1 answer
  • If you are good at science pls answer these questions (only 4 questions)
    12·1 answer
  • How are you? <br>wish you a great day
    7·1 answer
  • Let's Apply Solve for the surface area of the following figures. ​<br><br>please i need this rn​
    12·1 answer
  • You have five gears meshed to each other running in a line. the first gear z=100, second gear z=50, third gear z=200, fourth gea
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!