Question

determinati abscisele punctelor de intersectie a graficului f:r-r , f(x)= x^2 +3x cu ox​

Answer 1

x^2+3x-1=x-1

x^2+3x-1-x+1=0

x^2+2x=0

x(x+2)=0

x1=0

x+2=0 => x2=-2

Abscisele sunt -2 si 0.