a) (x+1)^2 = x^2 + 2x * 1^2 = x^2 + 2x + 1
b) (1+x)^2 = 1^2 + 2 * 1x + x^2 = 1 + 2x + x^2
c) (x-1)^2 = x^2 - 2x * 1 + 1^2 = x^2 - 2x + 1
d) (1-x)^2 = 1^2 - 2 * 1x + x^2 = 1 - 2x + x^2
e) (-y+5)^2 = (5-y)^2 = 5^2 - 2 * 5y + y^2 = 25 - 10y + y^2
f) (-b^3+5)^2 = (5-b^3)^2 = 5^2 - 2 * 5b^3 + (b^3)^2 = 25 - 10b^3 + b^6
g) (x+5)(x-5) = x^2 - 5^2 = x^2 - 25
e) (a+ √7)(a-√7) = a^2 - √7^2 = a^2 - 7
Sper ca te am ajutat!!
^ puterea
* inmultire
g)