Question

выполните действие 1. (3x-4y)²
2. (x²+5)²​

Answer 1

1.

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

$9x {}^{2} - 24xy + 16y {}^{2}$

2.

$(x {}^{2} ) {}^{2} + 2x {}^{2} + 5 + 5 {}^{2}$

$x {}^{4} + 10x {}^{2} + 25$