Which factor pair does not belong with the other three explain 2,28 4,14 6,9 7,8

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.