Let a and b be positive numbers such that a < b. State whether the absolute value equation

EunoR

EunoR

Answered question

2021-01-10

Let a and b be positive numbers such that a<b. State whether the absolute value equation has no solution, two negative solutions, two positive solutions, or one positive and one negative solution.
|xb|=a
no solution
two negative solutions
two positive solutions
one positive and one negative solution

Answer & Explanation

saiyansruleA

saiyansruleA

Skilled2021-01-11Added 110 answers

Consider that a and b are positive number such that a<b.
Recall that the absolute difference of two number is a positive number.
So, the expression |xb| is always a positive number for all values of x.
But -a is a negative number since a is a positive number.
Since the left-hand side of the equation |xb|=a is a positive number and right-hand side of the equation |xb|=a is a negative number hence the equation |xb|=a has no solution.

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