Question

(5x-3y)(2x+7x) помогите

Answer 1

Объяснение:

$(5 x - 3y)(2y + 7x) = 5x \times 2y + 5x \times 7x - 3y \times 2y \times 7x = 10xy + 35x {}^{2} - 6y {}^{2} - 21y = - 11y + 35 {}^{2} - 6y {}^{2}$