Question

-19 x [4 + (-2)] = - 19 x 4 + (-19) x X

Find X in the following with step if your answer is right I will definitely make you brainliest.​

Answer 1

Answer:

((0-(19•(x4)))+-2)-((0-19x4)+-19x2)  = 0  

STEP  

2

:

Equation at the end of step

2

:

 ((0 -  19x4) +  -2) -  (-19x4 - 19x2)  = 0  

STEP

3

:

Trying to factor as a Difference of Squares

3.1      Factoring:  19x2-2  

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 :  19  is not a square !!

Ruling : Binomial can not be factored as the

difference of two perfect squares

Equation at the end of step

3

:

 19x2 - 2  = 0  

STEP

4

:

Solving a Single Variable Equation

4.1      Solve  :    19x2-2 = 0  

Add  2  to both sides of the equation :  

                     19x2 = 2

Divide both sides of the equation by 19:

                    x2 = 2/19 = 0.105

 

When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  

                     x  =  ± √ 2/19  

The equation has two real solutions  

These solutions are  x = ±√ 0.105 = ± 0.32444  

 

Two solutions were found :

x = ±√ 0.105 = ± 0.32444

Step-by-step explanation: