Question

разложите на множители 4b^2 - (b+2)^2

Answer 1

$4b^2-(b+2)^2=2^2b^2-(b+2)^2=(2b)-(b+2)^2=$
$=[(2b)-(b+2)]*[(2b)+(b+2)] =[2b-b-2]*[2b+b+2]=$
$=(b-2)(3b+2)$

Answer 2

благодарствую!

Answer 3

на здоровье