a) 4 la puterea 2 - 2 × 4 × X + X la puterea 2
(4-x)la puterea 2
b) 4 ( 25 -10x+x la puterea 2)
4(5-x) la puterea 2
c) a la puterea 2 -2x a x 10 + 10 la puterea 2.
d) 1 supra 4×( 4×la puterea 2-12x + 9)
1 supra 4 × ( 2x-3) la puterea 2
0,25( 2x-3) la puterea 2.
Succes!
