A pair of lowercase letters represents a recessive gene.
For further clarification, if needed... If the punnett square was for dark hair being dominant over blonde hair, the offspring that was represented by two lowercase letters in a punnett square would have a phenotype of blonde hair.
Which type of divison is needed for this problem
Polynomial or Simple?
The zeroes are 8 and -7
x^2 - x - 56 = 0
(x - 8)(x + 7) = 0
x - 8 = 0 so x = 8
or
x + 7 = 0 so x = -7
What are you trying to figure out?
<span />