O= x³+x²+x+1
O= x(x²+x+1)+1
O= x(x(x+1)+1)+1
P= x² - 12x+35
P= (x² - 2×(x)×6 + 35+1)-1
P= (x-6)² - 1²
P= (x-6-1)(x-6+1)
P= (x-7)(x-5)
Q= 25+10x + x²
Q= x² + 10x + 25
Q= x²+2×(x)×5 + 5²
Q= (x+5)²
R= x² + (2x/3) + (1/9)
R= x² + ( 2 × (1/3) × (x)) + ((1/3)²)
R= (x+ 1/3)²
S= 169 - 78x + 9x²
S= 13² - 2×(3x)×13 + (3x)²
S= (3x - 13)²
T= x² - 4x + 4
T= x² - 2×(x)×2 + 2²
T= ( x - 2)²
U= 9x² - 4
U= (3x)² - 2²
U= (3x-2)(3x+2)
Bonne Chance =)
