Complete the square to solve the equation below x^2+10x+10=14

Me because some of question i don’t understand

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5