How to solve 3x 2

How to solve 3x 2 DEFAULT

Introduction: Solving 3x + 2 = 8

In this Instructible, I will show you how to solve the equation 3x + 2 = 8.

Step 1: Step 1: Subtract

The first step is to subtract 2 from both sides of the equal sign:

3x + 2 = 8
       -2   -2

Which leaves us:
3x = 6

Step 2: Step 2: Divide

In Step 2, we divide both sides by the coefficient in front of x:

3x = 6
  /3    /3

Which gives us:

x = 2

Step 3: Step 3: Check Your Solution

In the final step, we will check our solution by plugging our answer back in to the original equation:

3(2) + 2 = 8

We simplify this according to PEMDAS

6 + 2 = 8
8 = 8

Since we get the same number on both sides, we know the solution x = 2 is correct!

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Sours: https://www.instructables.com/Solving-3x/

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\mathrm{simplify} \mathrm{solve\:for} \mathrm{expand} \mathrm{factor} \mathrm{rationalize}
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Nonlinear equations

Step by step solution :

Step  1  :

Equation at the end of step  1  :

3x2 - 2 = 0

Step  2  :

Trying to factor as a Difference of Squares :

       Factoring:  3x2-2 

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =
         A2 - AB + BA - B2 =
         A2- AB + AB - B2 =
         A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 3  is not a square !!

Ruling : Binomial can not be factored as the
difference of two perfect squares

Equation at the end of step  2  :

3x2 - 2 = 0

Step  3  :

Solving a Single Variable Equation :

       Solve  :    3x2-2 = 0 

 Add  2  to both sides of the equation : 
                      3x2 = 2
Divide both sides of the equation by 3:
                     x2 = 2/3 =
 
 When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  
                      x  =  ± √ 2/3  

 The equation has two real solutions  
 These solutions are  x = ±√ = ±  
 

Two solutions were found :

                   x = ±√ = ±
Sours: https://www.tiger-algebra.com/drill/3x~=0/
How To Factor Polynomials The Easy Way!

Nonlinear equations

Step by step solution :

Step  1  :

Equation at the end of step  1  :

3x2 = 0

Step  2  :

Solving a Single Variable Equation :

       Solve  :    3x2 = 0 

 Divide both sides of the equation by 3:
                     3x2 = 0
 
 When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  
                      3x  =  ± √ 0  

 Any root of zero is zero. This equation has one solution which is  3x = 0

One solution was found :

                   3x = 0
Sours: https://www.tiger-algebra.com/drill/3x~2=0/

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How To Factor Polynomials The Easy Way!

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