1) (х - 4)²=х²-8х+16
2) (3х- 5)²=9х²-30х+25
3) ( 2а-3) ( 2а+ 3)=4а²-9
4) (у² -2) ( у²+2)=у⁴-4
1) x^2-8x+16
2) 9x^2-30x+25
3) 4a^2-6a+6a-9=4a^2-9
4) y^4-2y^2+2y^2-4=y^4-4
1) (х - 4)²=х²-8х+16
2) (3х- 5)²=9х²-30х+25
3) ( 2а-3) ( 2а+ 3)=4а²-9
4) (у² -2) ( у²+2)=у⁴-4
1) x^2-8x+16
2) 9x^2-30x+25
3) 4a^2-6a+6a-9=4a^2-9
4) y^4-2y^2+2y^2-4=y^4-4