Преобразуйте выражение в многочлен стандартного вида:
а) $6a^2 - (2 - (1,56a - (a^2 + 0,36a)) + (5,5a^2 + 1,2a - 1))$;
б) $(a^2 + 2x^2) - (5a^2 - 1,2ax + (2,8x^2 - (1,5a^2 - 0,5ax + 1,8x^2)))$;
в) $12,5x^2 + y^2 - (8x^2 - 5y^2 - (-10x^2 + (5,5x^2 - 6y^2)))$;
г) $(y^3 + 3z^2) - (y^3 - 6az + (2y^3 - (3z^2 + 4az - 1,2y^3)))$.
$6a^2 - (2 - (1,56a - (a^2 + 0,36a)) + (5,5a^2 + 1,2a - 1)) = 6a^2 - (2 - (1,56a - a^2 - 0,36a) + 5,5a^2 + 1,2a - 1) = 6a^2 - (2 - 1,56a + a^2 + 0,36a + 5,5a^2 + 1,2a - 1) = 6a^2 - 2 + 1,56a - a^2 - 0,36a - 5,5a^2 - 1,2a + 1 = -0,5a^2 - 1$
$(a^2 + 2x^2) - (5a^2 - 1,2ax + (2,8x^2 - (1,5a^2 - 0,5ax + 1,8x^2))) = a^2 + 2x^2 - (5a^2 - 1,2ax + (2,8x^2 - 1,5a^2 + 0,5ax - 1,8x^2)) = a^2 + 2x^2 - (5a^2 - 1,2ax + 2,8x^2 - 1,5a^2 + 0,5ax - 1,8x^2) = a^2 + 2x^2 - 5a^2 + 1,2ax - 2,8x^2 + 1,5a^2 - 0,5ax + 1,8x^2 = -2,5a^2 + 0,7ax + x^2$
$12,5x^2 + y^2 - (8x^2 - 5y^2 - (-10x^2 + (5,5x^2 - 6y^2))) = 12,5x^2 + y^2 - (8x^2 - 5y^2 - (-10x^2 + 5,5x^2 - 6y^2)) = 12,5x^2 + y^2 - (8x^2 - 5y^2 + 10x^2 - 5,5x^2 + 6y^2) = 12,5x^2 + y^2 - 8x^2 + 5y^2 - 10x^2 + 5,5x^2 - 6y^2 = 0$
$(y^3 + 3z^2) - (y^3 - 6az + (2y^3 - (3z^2 + 4az - 1,2y^3))) = y^3 + 3z^2 - (y^3 - 6az + (2y^3 - 3z^2 - 4az + 1,2y^3)) = y^3 + 3z^2 - (y^3 - 6az + 2y^3 - 3z^2 - 4az + 1,2y^3) = y^3 + 3z^2 - y^3 + 6az - 2y^3 + 3z^2 + 4az - 1,2y^3 = -3,2y^3 + 10az + 6z^2$
Пожауйста, оцените решение
