Question

Qual o resultado de (2x + 3y) • (2x-3x)

Answer 1

$(2x + 3y)(2x - 3x) \\ (2x \times 2x) + (2x \times ( - 3x)) + (3y \times 2x) + (3y \times ( - 3x)) \\ ( {4x}^{2} ) + ( - 6x^2) + (6xy) + ( - 9xy) \\ {4x}^{2} - 6x^2 + 6xy - 9xy \\ {-2x}^{2} - 3xy$