Question

Dada a função f(x)=x²+3x-10, calcule:
A)F(-4)= B)F(3)=
.......................................................................

Answer 1

Resposta:

f(x)=x²+3x-10

x²+(5-2)x-10

x(x+5)-2(x-5)

(x-2)(x+5)

x-2=0 , x=2

x+5=0 , x=-5 and.