Question 37
Multiplying an inequality by a negative number reverses its sense. Consider $(a+b)^2$; this must be greater than or equal to zero so rearranging this gives statement 2. For statement 3, we have no assurance that $c$ is positive, so this is not always true.
Multiplying an inequality by a negative number reverses its sense. Consider $(a+b)^2$; this must be greater than or equal to zero so rearranging this gives statement 2. For statement 3, we have no assurance that $c$ is positive, so this is not always true.