Question

3. Выполните (3x²- 5x ) - (7x²-4x.) + (6x 2 +5х)

Answer 1

Ответ:

$(3 {x}^{2} - 5x) - (7 {x}^{2} - 4x) + (6 {x}^{2} + 5x) = 3 {x}^{2} - 5x - 7 {x}^{2} + 4x + 6 {x}^{2} + 5x = 2 {x}^{2} + 4x$