I hope this helps you
1)
1.x^2+8x-6=0
D=8^2-4.1. (-6)
D=88
x1= -8+square root of 88/2.1
x2= -8- square root of 88/2.1
3)
x^2-10x-32=0
D=(-10)^2-4.1. (-32)=228
x1=10+square root of 288/2.1
x2=10- square root of 288/2.1
5)
x^2+4x+10=0
D=4^2-4.1.10= -24
x1=-4+2i.square root of6/2.1
x2= -4-2i.square root of 6/2.1
