Question

determine a interseção entre -3x²+4x+2 e g(x)= -5x+8

Answer 1

-3x²+4x+2 = -5x+8

-3x² +9x -6 = 0. ===> :(-3)

x² - 3x + 2 = 0

(x -1) .(x-2) = 0

x'=1. x"=2

g(x)=-5x+8

y'=-5(1)+8=3. y"=-5(2)+8 =-2

=> P'(1, 3) , P"(2, -2) <=====©