Question

ПОМОГИТЕ ПЖЖ!!1.2.3.5.7
ПЛЕЕЕЗ

Answer 1

$1)\frac{6}{5 \times 3} = \frac{2}{5} = 0.4$
$3)(5x - 1) {}^{2} = (5x) { }^{2} - 2 \times 5x \times 1 + 1 {}^{2} = 25x {}^{2} - 10x + 1$
$2) \frac{24ab}{36a {}^{3}b } = \frac{2}{3a {}^{2} }$