We are asked to perform factorization in the given expression y2 + 10z - 10y -yz. The solution to this problem is shown below:
y2 + 10z - 10y - yz , we need to separate term such as below:
(y - 10) (y - z)
Perform checking:
(y-10) (y- z) = y2 -yz -10y +10z which the same in the given expression in the problem
Therefore, the answer is (y-10)(y-z).