Just need help with question 39 please

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Each of the four sides of a swimming pool measures 9 meters. the pool is 5 meters deep. how much water will be needed to fill it completely? a. 45 cubic meters b. 81 cubic meters c. 225 cubic meters d. 405 cubic meters reset next

X+y=-4 x-y=2 use elimination with adding and subtraction