Do any numbers multiply into 7 and add up to 8? or is it unfactorable

With #! i’ve tried to figure it out but i can’t.

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Precalculus question, image attached.