Răspuns :
x la a doua +2 ori x ori 1+1 la a doua=x la a doua +2x+1
2x la a doua - 2 ori 2x ori 3+3 la a doua= 4x la a doua- 12x+3
4x la a doua - 1 la a doua= 16 la a doua-1
sper ca te-am ajutat
2x la a doua - 2 ori 2x ori 3+3 la a doua= 4x la a doua- 12x+3
4x la a doua - 1 la a doua= 16 la a doua-1
sper ca te-am ajutat
(x+1)^2= x^2+2x+1
(2x-3)^2= 4x^2-12x+9
(4x-1)(4x+1)= (4x)^2 - 1^2 = 16x^2 - 1
unde ^2 inseamna ridicat la puterea a doua
(2x-3)^2= 4x^2-12x+9
(4x-1)(4x+1)= (4x)^2 - 1^2 = 16x^2 - 1
unde ^2 inseamna ridicat la puterea a doua
