Question

Спростіть вираз (x-2)(x+2)-x(x+3)​

Answer 1

$(x - 2)(x + 2) - x(x + 3)$

${x}^{2} + 2x - 2x - 4 - {x}^{2} - 3x =$

$= - 3x - 4$

Answer 2

${x}^{2} + 2x - 2x - 4 - {x}^{2} - 3x \\ - 3x = 4 \\ x = 1 \times \frac{1}{3}$