Note:
Solve for x in the following equation.
Problem 3.3c:
Answer: and
Solutions:
Either or
Step 1:
Step 2:
The answers are (rounded) and *(rounded)
Step 3:
Since the left side of the original equation equals the right side of the original equation when -1.26087 is substituted for, then x=-1.26087 is a valid solution.
Check the solution by substituting
-0.67568 in the original equation for x. If the left side of the equation
equals the right side of the equation after the substitution, you have found
the correct answer.
Since the left side of the original equation equals the right side of the original equation when -0.67568 is substituted for, then x=-0.67568 is a valid solution.
You can also check your answer by graphing (the left side of the original equation minus the
right side of the original equation). You will note that the two
x-intercepts on the graph are located at
and This verifies the solutions.
If you would like to go back to the problem page, click on problem.
If you would like to go back to the equation table of contents, click on contents
Do you need more help? Please post your question on our S.O.S. Mathematics CyberBoard.
Author:Nancy Marcus