Question

Which of the following equations is quadratic?

x(x2 + 1) = 0
5(4x + 2) = 3
(x + 3)(x + 4) = 5

Answer 1

c or b because it doesnt equal with a 0

Answer 2

the question here, James, is whether you have a quadratic equation or not. Doesn't matter if the given equation ends in 0 or not.
What exactly is a quadratic equation? Define it; give an example.

Answer 3

5(4x + 2) = 3 Because,

Divide both sides by 55
4x+2=35
4x+2=35

2 Subtract 22 from both sides
4x=35−2
4x=35−2

3 Simplify 35−235−2 to −75−75
4x=−75
4x=−75

4 Divide both sides by 44
x=−754
x=−754

5 Simplify 754754 to 75×475×4
x=−75×4
x=−75×4

6 Simplify 5×45×4 to 2020
x=−720

Answer 4

In math, we define a quadratic equation as an equation of degree 2, meaning that the highest exponent of this function is 2. The standard form of a quadratic is y = ax^2 + bx + c, where a, b, and c are numbers and a cannot be 0.

Answer 5

So yeah i would say 5(4x + 2) = 3

Answer 6

and a cannot be 0.

Answer 7

forget my answer it is b

Answer 8

Yeah A is incorrect

Answer 9

to many diffrent answers here

Answer 10

the question here, James, is whether you have a quadratic equation or not. Doesn't matter if the given equation ends in 0 or not.
What exactly is a quadratic equation? Define it; give an example

Answer 11

B is right but what u think

Answer 12

the question here, James, is whether you have a quadratic equation or not. Doesn't matter if the given equation ends in 0 or not.
What exactly is a quadratic equation? Define it; give an example.

Answer 13

Mathmale have a point ^

Answer 14

i already did do that people

Answer 15

So why u think A is incorrect

Answer 16

me

Answer 17

Yeh

Answer 18

i said i didnt think a was correct

Answer 19

In math, we define a quadratic equation as an equation of degree 2, meaning that the highest exponent of this function is 2. The standard form of a quadratic is y = ax^2 + bx + c, where a, b, and c are numbers and a cannot be 0.

Answer 20

Ok

Answer 21

Now lets do C

Answer 22

the first equation needs to be re-written: x(x2 + 1) = 0 contains an exponent (2), which is better written as x^2, not as x2.

x(x^2+1)=0. Is this a quadratic or not? Reason?

I'm more interested in your understanding the math here; you need to be able to explain why a given answer is correct or not.

Answer 23

^

Answer 24

^^

Answer 25

James? Is the first equation a quadratic or is it not? I'm asking you to explain your reasons. I am aware you've addressed this before, but you have not explained your reasoning.

Answer 26

Let's solve your equation step-by-step.
x(x2+1)=0
x3+x=0
Step 1: Factor left side of equation.
x(x2+1)=0
Step 2: Set factors equal to 0.
x=0 or x2+1=0
x=0
Answer:
x=0
that's what i got for a

Answer 27

Solution
1 Divide both sides by 55
4x+2=35
4x+2=35

2 Subtract 22 from both sides
4x=35−2
4x=35−2

3 Simplify 35−235−2 to −75−75
4x=−75
4x=−75

4 Divide both sides by 44
x=−754
x=−754

5 Simplify 754754 to 75×475×4
x=−75×4
x=−75×4

6 Simplify 5×45×4 to 2020
x=−720 that's for b

Answer 28

Please: express your exponentiation correctly:

x^2: correct ("square of x") x2: wrong
x^3 correct ("cube of x") x3: wrong

Answer 29

Solution
1 Expand
x2+4x+3x+12=5
x2+4x+3x+12=5

2 Simplify x2+4x+3x+12x2+4x+3x+12 to x2+7x+12x2+7x+12
x2+7x+12=5
x2+7x+12=5

3 Move all terms to one side
x2+7x+12−5=0
x2+7x+12−5=0

4 Simplify x2+7x+12−5x2+7x+12−5 to x2+7x+7x2+7x+7
x2+7x+7=0
x2+7x+7=0

5 Apply the Quadratic Formula
Given the general form ax2+bx+c=0ax2+bx+c=0, there exists two solutions where:
x=−b+b2−4ac√2a,−b−b2−4ac√2ax=−b+b2−4ac2a,−b−b2−4ac2a.
In this case, a=1a=1, b=7b=7 and c=7c=7.
x=−7+21−−√2,−7−21−−√2 thats what i got for c

Answer 30

@jjcoolja12 : The point of this question is not to solve for x; it's to identify which of the given equations is a quadratic. That's all.

Answer 31

Yeah

Answer 32

i know

Answer 33

Then why "solve" these equations? wouldn't it make more sense to help james answer the question in front of him: "Which of the following equations is quadratic?" ?

Answer 34

i just like solving them it's just something i grew up on is that against the rules

Answer 35

Yes, because it's a distraction. James never did finish this problem, which involved identifying which of the equations is quadratic. Perhaps if you and the rest of us had focused on that simple question, he would have been able to choose the correct response.

Answer 36

dont worry about this question i got the answer thanks though all of yall

Answer 37

@alivejeremy still there