(5x-3)²=25х²-30х+9
(7x-9)²=49х²-126х+81
(3x+5)² =9х²+30х+25
(11x-1)²= 121-22х+1
(6x-4x)²36х²-48х+16х² =
(5x-1)(3x+5) = 15х²+(25-3)х-5= 15х²+22х-5
(3x-5)(3x+5) = 9х²-25
49x²-16 =(7х-4)(7х+4)
36x²-25=(6х-5)(6х+5)
(5x-3)²=25х²-30х+9
(7x-9)²=49х²-126х+81
(3x+5)² =9х²+30х+25
(11x-1)²= 121-22х+1
(6x-4x)²36х²-48х+16х² =
(5x-1)(3x+5) = 15х²+(25-3)х-5= 15х²+22х-5
(3x-5)(3x+5) = 9х²-25
49x²-16 =(7х-4)(7х+4)
36x²-25=(6х-5)(6х+5)