Identify Coefficients in the Equation 6=6x+2x²: Term Analysis

Quadratic Standard Form with Coefficient Identification

Identify the coefficients based on the following equation

6=6x+2x2 6=6x+2x^2

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Find the function coefficients
00:07 Arrange the equation so that one side equals 0
00:16 Use the formula to represent a quadratic equation
00:23 Arrange the equation to match the formula
00:42 Separate the variable from the coefficient
00:57 Compare the formula to our equation and find the coefficients
01:09 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Identify the coefficients based on the following equation

6=6x+2x2 6=6x+2x^2

2

Step-by-step solution

To solve this problem, we'll start by rearranging the given equation:

  • Step 1: Identify the standard quadratic form: y=ax2+bx+cy = ax^2 + bx + c.
  • Step 2: Rearrange 6=6x+2x26 = 6x + 2x^2 to fit ax2+bx+c=0ax^2 + bx + c = 0.
  • Step 3: Identify coefficients aa, bb, and cc.

Now, let's work through each step:
Step 1: The general form we aim for is y=ax2+bx+cy = ax^2 + bx + c.
Step 2: Rearrange the given equation:
Start by rearranging the terms to resemble ax2+bx+c=0ax^2 + bx + c = 0. We write the equation as:
2x2+6x6=0 2x^2 + 6x - 6 = 0

Step 3: Now, comparing this with the standard form ax2+bx+c=0ax^2 + bx + c = 0, we identify the coefficients:
a=2 a = 2
b=6 b = 6
c=6 c = -6

Therefore, the correct parameters for the equation 6=6x+2x2 6 = 6x + 2x^2 are a=2 a = 2 , b=6 b = 6 , and c=6 c = -6 .

Checking against the answer choices, choice 3: (a=2,b=6,c=6)(a=2, b=6, c=-6) matches our result.

3

Final Answer

a=2b=6c=6 a=2\\b=6\\c=-6

Key Points to Remember

Essential concepts to master this topic
  • Standard Form: Rearrange equation to ax2+bx+c=0 ax^2 + bx + c = 0
  • Technique: Move all terms to one side: 2x2+6x6=0 2x^2 + 6x - 6 = 0
  • Check: Verify coefficients match positions: a=2 (x²), b=6 (x), c=-6 (constant) ✓

Common Mistakes

Avoid these frequent errors
  • Identifying coefficients without rearranging to standard form
    Don't read coefficients directly from 6 = 6x + 2x² without rearranging = wrong values like a=6! The equation must be in ax² + bx + c = 0 form first. Always rearrange to standard form before identifying coefficients.

Practice Quiz

Test your knowledge with interactive questions

What is the value of the coefficient \( c \) in the equation below?

\( 4x^2+9x-2 \)

FAQ

Everything you need to know about this question

Why can't I just read the coefficients from 6 = 6x + 2x²?

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Because the equation isn't in standard form yet! You need ax2+bx+c=0 ax^2 + bx + c = 0 to correctly identify coefficients. The constant term changes sign when you move it across the equals sign.

How do I remember which coefficient is which?

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Use the pattern a-b-c: a goes with x², b goes with x¹, and c is the constant (no x). Think alphabetical order matching decreasing powers!

What if there's no x term in my equation?

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Then b = 0! Every quadratic has the form ax² + bx + c, but sometimes b or c can be zero. Don't skip them - write b = 0 explicitly.

Why is my c coefficient negative when it was positive originally?

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Because you moved it across the equals sign! When you rearrange 6=6x+2x2 6 = 6x + 2x^2 to standard form, the 6 becomes -6. Always pay attention to sign changes.

Can I write the equation in a different order?

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The terms can be in any order, but standard form convention is highest power first: ax² + bx + c. This makes coefficient identification easier and more consistent.

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