bonjour,
A) 4 x² +3 x = x ( 4 x + 3 )
B= 2 x+5 x³ = x ( 2 + 5 x²)
C=5 x² - 15 x = 5 x ( x - 3 )
D) 5 x³ -x² +2 x = x ( 5 x² - x + 2 )
E) 7 x² -x = x ( 7 x - 1 )
F) 4 x² +8 x = 4 x ( x + 2 )
G) 2 x² +8 x⁴ = 2 x² ( 1 + 4 x²)
H) -4 x³ -4 x²+8 x = 4 x ( - x² - x + 2 )