Question

si f(x)=8x²-5x+3encontrar f(-4/3) f(5)​

Answer 1

Respuesta:

F(X) = 8x²-5x+3

F(-4/3) = 8(-4/3)²-5(-4/3)+3

F(-4/3) = 8(16/9)-(5(-4/3))+3

F(-4/3) = 128/9-(-20/3)+3

F(-4/3) = 128/9+20/3+3 ; 3 = 9/3

F(-4/3) = 128/9+20/3+9/3

F(-4/3) = 128/9+20/3 ; 128/9+20/3 = 3(128)+9(20)/(9×3) = (384+180)/27 = 564/27 y 564/27 = 188/9

Por ende :

F(-4/3) = 188/9

F(5) = 8(5)²-5(5)+3

F(5) = 8(25)-25+3

F(5) = 200-25+3

F(5) = 175+3

F(5) = 178

Explicación paso a paso: