Which shows the following etion a cubed b Superscript negative 2 Baseline Over a b Superscript negative 4 Baseline EndFraction, a noxpression after the negative exponents have been eliminated? StartFract-equals 0, b not-equals 0 StartFraction a cubed b Superscript negative 4 Baseline Over a b Superscript negative 2 Baseline EndFraction StartFraction a b Superscript 4 Baseline Over a cubed b squared EndFraction Negative StartFraction a cubed b Superscript 4 Baseline Over a b squared EndFraction StartFraction a cubed b Superscript 4 Baseline a b squared EndFraction

Which of the following statements is true? a. the irrational number system is not closed under multiplication, because the product of two irrational numbers is always a rational number. b. the irrational number system is not closed under multiplication, because the product of two irrational numbers is not always an irrational number. c. the irrational number system is closed under multiplication, because the product of two irrational numbers is always an irrational number. d. the irrational number system is closed under multiplication, because the product of two irrational numbers is always a rational numbers. reset submit