Question

Sendo F(x)=3x+2 e G(x)=-2x-5, calcule

A) F 1/3 + G (1/2)
B) F (-2/5) - G 2/3

Answer 1

Boa tarde

f(x) = 3x + 2 
g(x) = -2x - 5 

a)

f(1/3) = 1 + 2 = 3
g(1/2) = -1 - 5 = -6 

f(1/3) + g(1/2) = 3 - 6 = -3 

b)

f(-2/5) = --6/5 + 10/5 = 4/5 = 12/15
g(2/3) = -4/3 - 15/3 = -19/3  = -95/15 

f(-2/5) - g(2/3) = 12/15 + 95/15 = 107/15