Question

номер 276( 7 класс) решите срочно

Answer 1

1)$y^{2} +3y-2y-6-y^2+4y-4= 5y-10 neq 6y-11$
2)$4x^2-20x+25-4x^2+9=20x+34 neq 0$
3)$9x^2+12x+4-16+24x-9x^2=36x-14 geq 37x+14$
4)$25x^2-20x+4-15 leq 16x^2-8x+1+9x^2$
$25x^2-20x-11 leq 25x^2-8x+1$