Question

Simplifique as seguintes frações:
a)2a³/15a
b)2abc²/8b²c
c)3xy/xy
d)x² -ax/2a
e)3/3x+3y
f)2m/4a²-6m
g)x²-1/2x+2
h)ac+bc/a²-12

Me ajudem PLEASEEEE!

Answer 1

$\frac{2 {a}^{3} }{15a} = \frac{2 \times a \times a \times a}{15 \times a} = \frac{2 \times a \times a}{15} = \frac{2 {a}^{2} }{15}$
$\frac{2ab {c}^{2} }{8 {b}^{2}c } = \frac{2 \times a \times b \times c \times c}{8 \times b \times b \times c} = \frac{1 \times a \times c}{4 \times b} = \frac{1ac}{4b}$

Answer 2

$a)~\frac{2a^{3}}{15a} =\frac{2.a.a.a}{15.a} =\frac{2.a.a}{15} =\frac{2a^{2}}{15}$

$b)~\frac{2abc^{2}}{8b^{2}c}=\frac{2.a.b.c.c}{8.b.b.c}=\frac{ac}{4b}$

$c)~\frac{3xy}{xy} =3$

$d)~\frac{x^{2}-ax}{2a} =\frac{x(x-a)}{2a}$

$e)~\frac{3}{3x+3y} =\frac{3}{3(x+y)} =\frac{1}{x+y}$

$f)~\frac{2m}{4a^{2}-6m} =\frac{2m}{2(2a^{2}-3m)}=\frac{m}{2a^{2}-3m}$

$g)~\frac{x^{2}-1}{2x+2} =\frac{(x+1)(x-1)}{2(x+1)} =\frac{x-1}{2}$

$h)~\frac{ac+bc}{a^{2}-12} =\frac{c(a+b)}{a^{2}-12}$