Question

a)4x la a doua -4x=8 repede va rog​

Answer 1

Răspuns:

☕ SALUT! ☕

4x²-4x=8

x²-x=2

x²-x-2=0

x²+x-2x-2=0

x(x+1)-2(x+1)=0

(x+1)(x-2)=0

x+1=0

x-2=0

x=-1

x=2

S={-1;2}