Question

x la a doua - 2X=8 repede va rog​

Answer 1

Răspuns:

Obtii -2 si 4

Explicație pas cu pas:$x^{2} -2x=8\\x^{2} -2x-8\\delta=(-2)^{2} -4*1*(-8)=36\\x1=2+rad36/2=8/2=4\\x2=2-rad36/2=-4/2=-2$