x2-10x+8=0(x-5)2-25+8=0(x-5)2-17=0(x-5)2=17x-5=-√17 of x-5=√17x=5-√17 of x=5+√17
x2-4x=8(x-2)2-4=8(x-2)2=12x-2=-√12 of x-2=√12x=2-2√3 of x=2+2√3
x²+6x+12=0(x+3)²+3=0(x+3)²=-3Geen oplossing
Zie ook Kwadraatafsplitsen