Question

1)(x + 5)3 - (x + 1)3 - 4(3x2 -5) + 10x - 7;
2) (x - 3)3 - x2(x + 6) - 5x(5 - 3x) - 19x + 1;
3) (y + 4)3 + (3y + 1)3 - 7y2(4y + 9) + 24y2 + 8;
4) (4y - 5)3 - (4y + 5)3 - 48y(1 - 10y) + 5 - 14y2.



СРОЧНО СРОЧНО СРОЧНО СРОЧНО СРОСНО​

Answer 1

$1)25 - 14x \\4)480 {y}^{2} - 76y - 25 \\ 2)13 {x}^{2} - 53x - 8 \\ 3) - 56 {y}^{2} - 66y + 23$