Example of absolute value equations, Algebra

Assignment Help:

Solve following.

                                 |2x - 5 |= 9

Solution

Now, recall that absolute value does not just make all minus signs in plus signs. In order to solve these we've got to employ the formula above as in all cases the number on the right side of the equal sign is positive.

There actually isn't much to do here other than using the formula from above as noted above.  All we have to note is that in the formula above p represents whatever is on the inside of the absolute value bars and so in this case we have,

                                                           2 x - 5 = -9          or    2 x - 5 = 9

At this instance we've got two linear equations which are easy to solve.

2 x = -4           or         2 x = 14

x = -2  or       x = 7

Thus, we've got two solutions to the equation

                      x = -2 and    x =7 .

 

Now, let's take a look at how to deal with equations for which b is zero or negative.  We'll do this with an example.


Related Discussions:- Example of absolute value equations

ESTIMATES, 12 X 6 = FIND THE ESTIMATE AND RECCORD THE PRODUCT

12 X 6 = FIND THE ESTIMATE AND RECCORD THE PRODUCT

Equations, how to to a equations ?

how to to a equations ?

Cubic function, Actually here we're not going to look at a general cubic po...

Actually here we're not going to look at a general cubic polynomial.  Here we are jsut going to look at f ( x ) = x 3 . Really there isn't much to do here other than only plugging

Word problem, Susan wants to mix 10 pounds of Virginia Peanuts that cost $...

Susan wants to mix 10 pounds of Virginia Peanuts that cost $3.50 a pound with Spanish peanuts that cost $3.00 a pound to obtain a mixture that cost $3.40 a pound. How many pounds

Example of absolute value equations, Solve following.                   ...

Solve following.                                  |2x - 5 |= 9 Solution Now, recall that absolute value does not just make all minus signs in plus signs. In order to sol

Variablesand inequalities, i need help with an assignment that is about two...

i need help with an assignment that is about two variable inequalities

Percent problems, an actor receives 5000 for a commercial plus 2.5% each ti...

an actor receives 5000 for a commercial plus 2.5% each time the commmercial airs.if the t represents the number of times the commercial airs e represents the total amount of money

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd