Rbianca68ask
a fost răspuns

(3x-4)^2+20=5(x+1)^2+(2x-3)^2

Răspuns :

DenisaLoreask
9x∧2-24x+16+20=5(x∧2+2x+1)+4x∧2-12x+9
9x∧2-24x+36=5x∧2+10x+5+4x∧2-12x+9
9x∧2-24x-5x∧2-10x-4x∧2+12x=-36+9+5
4x∧2-4x∧2-22x=-22
-22x=-22
x=1