Question

Descompuneti
x^2+6x-3
Va roog

Answer 1

Delta = b²-4ac = 36-4*1*(-3) = 36+12 = 48

x1 = (-b+√delta)/2 = (-6+4√3)/2 = -3+2√3

x2 = (-b-√delta)/2 = (-6-4√3)/2 = -3-2√3)

x²+6x-3 = 1[x-(-3+2√3)][x-(-3-2√3)] =

= (x+3-2√3)(x+3+2√3)

formula : ax²+bx+c = a(x-x1)(x-x2)