(f+g-k)(x) means to add the equations f(x) and g(x) then subtract k(x)
2x^2 + 3x + 4x - 9 = 2x^2 +7x -9
2x^2 + 7x - 9 - x^2 -7x = x^2 -9
The answer is : x^2 - 9
Answer:
its the first one
Step-by-step explanation:
i have no step by step explanation
Answer:
20 quarts of each ingredient, i'm assuming because lack of details.
Answer: x + 30 + 90= 180(sum of angles on a straight line)
x= 180-120
x=60
