Question

y= x²+2.x+40
Me ajudaa, pf

Answer 1

delta=b²-4ac
delta= 2²-4*1*40
delta=4-160

delta=-156

x=-b+/-√delta/2a

√-156 =√156i² = 2i√39

x'=-2+ 2√39i/2 = i√39-1
x''=-2-2√39i/2=  -i√39-1