Question

(6x² - 6x³ + 5x) - ( -4 + 6x² - 3x³)

(4x + 8y - 9z) - ( -5x + y - z)

- (5x + 7x³ - 4 + 2x²) - (-9 + 3x -2x² - 5x³)

Me ayudan porfavor :3

Answer 1

$(6x^2 - 6x^3 + 5x) - ( -4 + 6x^2- 3x^3) 6x^2 - 6x^3 + 5x +4 - 6x^2+ 3x^3 - 3x^3 + 5x +4$

$(4x + 8y - 9z) - ( -5x + y - z) 4x + 8y - 9z + 5x - y + z 9x + 7y - 8z$

$- (5x + 7x^{3} - 4 + 2x^{2} ) - (-9 + 3x -2x^{2} - 5x^{3} ) - 5x - 7x^{3} + 4 - 2x^{2} + 9 - 3x + 2x^{2} + 5x^{3} - 8x - 2x^{3} +13$