Question

помогите!!! Пожалуйста, срочно​

Answer 1

1)

$\frac{15a {}^{2} b {}^{3} }{18a {}^{3} b} = \frac{15a {}^{2} b {}^{2} }{18a {}^{3} } = \frac{15b {}^{2} }{18a} = \frac{5b {}^{2} }{6a}$

2)

$\frac{b {}^{2} - 9 }{b {}^{2} + 3b} = \frac{(b - 3)(b + 3)}{b(b + 3)} = \frac{b - 3}{b}$

3)

$\frac{48p {}^{3}q {}^{4} }{36p {}^{2} q {}^{4} } = \frac{48p {}^{3} }{36p {}^{2} } = \frac{48p}{36} = \frac{4p}{3}$

4)

$\frac{x { }^{2} + 8x + 16 } {x {}^{2} - 16 } = \frac{(x + 4 ){}^{2} }{x {}^{2} - 16 } = \frac{x + 4 {}^{2} }{(x - 4) \times (x + 4)} = \frac{x + 4}{x - 4}$