Răspuns :
2x² - 2x =10 -2x
2x² -2x + 2x = 10
2x² = 10
x² = 10/2
x² = 5
x = +/-√5
2x² -2x + 2x = 10
2x² = 10
x² = 10/2
x² = 5
x = +/-√5
[tex]2 x^{2}-2x=10-2x<=>2 x^{2}+2x-2x=10<=>x=2[tex] x^{2} [/tex]=10:2
x= +;-[tex] \sqrt{5} [/tex]
x= +;-[tex] \sqrt{5} [/tex]