Thursday, February 14, 2019

College Algebra, Chapter 1, 1.1, Section 1.1, Problem 8

Check whether a.) x=2 or b.) x=4 is a solution of the equation 1x1x4=1

a.) x=2

1(2)1(2)4=1Substitute x=21212=1Simplify1+12=1Get the LCD22=1Simplifty1=1

So x=2 is the solution to the equation.

b.) x=4

1(4)1(4)4=1Substitute x=414144=1Simplify1410=1Equation is undefined, denomitor is zero

So x=4 is not the solution to the equation.

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