Please please help me with those questions please please help me

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

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?