Question

Resuelve las siguientes operaciones​

Answer 1

Respuesta:

Explicación paso a paso:

a.  3$x^{2}$y-8$x^{2}$y

   (3-8)$x^{2}$y

    -5$x^{2}$y

b.   -2$m^{3} n^{2}$ -$15m^{3} n^{2}$

    $(-2-15)m^{3}n^{2}$

c.   $a^{5} -9a^{3}+6a^{2} -20 -a^{4} + 11a^{3}-a^{2}$

$a^{5} (-9+11)a^{3} (6-1)a^{2}-20-a^{4}$

$a^{5}+2a^{3}+5a^{2}-20-a^{4}$

$a^{5}-a^{4}+2a^{3}+5a^{2} -20$

d.  $\frac{1}{2}x+\frac{3}{5} y-\frac{7}{9}z - \frac{3}{5}y +\frac{1}{2}z-\frac{1}{2}$

$\frac{1}{90}(45x+54y-70z-54y+45z-45)$

$\frac{1}{90}(45x-25z-45)$

$\frac{1}{90}*5(9x-5z-9)$

$\frac{1}{18}(9x-5z-9)$

e  $(a+b-5+8a-3b+12)-2a-6b+2$

$((a+8a)(b-3b)(-5+12))-2a-6b+2$

$9a-2b+7-2a-6b+2$

$(9a-2a)+(-2b-6b)+(7+2)\\7a-8b+9$

f

$(8m^{2}+5-2+7m^{2} ))-(20m-8-m^{2}+5m)\\((8m^{2}+7m^{2})+(5-2))-((20m+5m)-6-m^{2})\\(15m^{2}+3)-(25m-8-m^{2})\\ 15m^{2}+3-25m-8-m^{2}\\(15m^{2}+m^{2})(3+8)-25m\\16m^{2} +11-25m \\16m^{2}-25m +11$