Question

descompunand in factori expresia:x2+x-30 se obtine....?

Answer 1

x(x+1)-30
....habar nu am
sau x2 + (x - radical din 30)(x + radical din 30 )

Answer 2

x2+x-30=x2+x-25-5=(x2-25)+(x-5)=(x-5)(x+5)+(x-5)=(x-5)(x+5+1)=(x-5)(x+6)