Question

разложите на множители
(х-3)^2 =
( 2а + 5b )^2 =
( a - 2 ) ( a + 2 ) =
( 3x - y ) ( y + 3x ) =

Answer 1

(х-3)^2 =х²-6х+9
( 2а + 5b )^2 =4а²+20ab+25b²
( a - 2 ) ( a + 2 ) = a²-4
( 3x - y ) ( y + 3x ) =9x²-y²