Question

a) 4x la a 2-4x+1=
b) 9x la a 2-6x+1=
c) 10x la a 2+8x+1=
d) 25x la a 2+10x+1=
e) 49x la a 2-14x+1=
f) 64x la a 2-16x+1=
g) 9x la a 2-12x+1=
h) 25x la a 2+20x+1=
i) 25x la a 2+40x+16x la a 2=

Answer 1

A) 4x la a 2-4x+1=(2x - 1)(2x - 1) = (2x - 1)²
b) 9x la a 2-6x+1= (3x - 1)(3x -1) = (3x - 1)²
c) 16x la a 2+8x+1= (4x + 1)(4x + 1) = (4x + 1)²
d) 25x la a 2+10x+1= ( 5x + 1)(5x + 1) = (5x + 1)²
e) 49x la a 2-14x+1= (7x - 1)(7x - 1) = (7x - 1)²
f) 64x la a 2-16x+1= (8x - 1)(8x - 1) = (8x - 1)²
g) 9x la a 2-12x+ 4 = (3x - 2)(3x - 2 ) = (3x - 2)² 
h) 25x la a 2+20x+4 = ( 5x + 2)(5x + 2) = (5x + 2) ²

 P.S.   unele exercitii sunt scrise gresit la tine