2is subtracted from a number, and then the the difference is multiplied by 5. the result is 30

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

Moira has a canvas that is 8 inches by 10 inches. she wants to paint a line diagonally from the top left corner to the bottom right corner. approximately how long will the diagonal line be?

The square root of 9x plus 7 plus the square rot of 2x equall to 7