Question

преобразуйте в многочлен: (x-2y)(x+2y)+4y^2 б)(5x-1)^2+10x

Answer 1

1)(x-2y)(x+2y)+4y^2

x^2-4y^2+4y^2

x^2

 

2)(5x-1)^2+10x

25x^2-10x+1+10x

25x^2+1

Answer 2

x^2+2ху-2ху-4y^2+4y^2=x^2

25х^2-10х+1+10х=25x^2+1