Question

сократите дробь: а) 15x^3y^5/45x^4y^3 b) a^3-2a^2/a^2-4​

Answer 1

a)

$\frac{15x {}^{3} y {}^{5} }{45 {x}^{4} {y}^{3} } = \frac{ {y}^{2} }{3x}$

b)

$\frac{a {}^{3} - {2a}^{2} }{ {a}^{2} - 4 } = \frac{a {}^{2}(a - 2) }{(a -2 )(a + 2)} = \frac{ {a}^{2} }{a + 2}$