Question

Помогите пожалуйста ​

Answer 1

Объяснение:

$5x {}^{2} \times ( - 3x {}^{3} ) {}^{2} = 5x {}^{2} \times (3 {}^{3} ) {}^{2} = 5x {}^{2} \times 3 {}^{6} = 5 \times 3 {}^{6} x {}^{2} = 5 \times 729x {}^{2} = 3645x {}^{2}$

$(2x - 1) {}^{2} + (2 x - 1)(2x + 1) = 4x {}^{2} - 4x + 1 + 4x {}^{2} - 1 = 4x {}^{2} - 4x + 4x {}^{2} = 8x {}^{2} - 4x$