Answer: Addition, 128
Step-by-step explanation: with any question like this you are to do the opposite of what is tells you to do like when it said the sum your supposed to subtract the two numbers.
1) (f + g)(2) = 7 + 3 = 10 The answer is C
2) (f - g)(4) = 11 - 15 = -4 The answer is A
3) f(1) = 2(1) + 3 = 5 g(1) = 1² - 1 = 0 The answer is D
4) (f xg ) (1) = 7/3 The answer is B
For
ax^2+bx+c=0
discriminatn is b^2-4ac
a=4
b=12
c=9
discriinat is
12^2-4(4)(9)=
144-144
0
the discrminat is 0
So for this problem we have to create a common denominator by multiplying 3-x to all of the expressions. So we have 2(3-x)/(3-x)-x(3-x)/(3-x)-1/(3-x) and then we simplify to get (x^2-5x+5)/(3-x) so C.
