How do i solve a Quadratic function?

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Find the area of an equilateral triangle with a side of 6 inches