WHAT IS 1+1? PLEASE HELP IM STRUGGLING S MUCH ;(

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)