Question

Помогите пожалуйста с алгеброй

Answer 1

$7x + 4y - 4x + 2y = 3x + 6y \\ 2a {}^{2} \times 2a {}^{2} - 3a {}^{2} + a \times 2a - a {}^{3} + a {}^{2} \\ 4a {}^{4} - 3a {}^{2} \times 2a {}^{2} - a {}^{3} + a {}^{2} \\ 4a {}^{4} - 6a {}^{4} - a {}^{3} + a {}^{2} \\ - 2a {}^{4} - a {}^{3} + a {}^{2}$