Question

{10a2 - 3a + 1 - (5a2 - a - 4)} - {5a2 - 1 + a2 - [6a2 - a + 1 - (5a + 7 - a2)]}

{a2 + 2ab + 1 - [3a2 - 5ab - 1 - (6a2 + 7ab - 6)] - 2ab} - [3a2 - 6 + (ab - a2)]

x2y3 + 2x2y3 - { - [3x2y3 + 4x2y3 + ... + 20x2y3]}

5a2b + 7ab2 - 2a2b - 8ab2 - [9a2b - 6ab2 - (a2b - ab2)]

10x - 20x + [3x5 - 10x + 3x5] - 6x5 + 20x

Answer 1

Explicación paso a paso:

1) $(10a^{2} - 3a + 1 - (5a^{2} - a - 4)) - (5a^{2} - 1 + a^{2} - [6a^{2} - a + 1 - (5a + 7 - a^{2} )])$

   $10a^{2}-3a+1-5a^{2} +a+4-(5a^{2}-1+a^{2} -(6a^{2}-a+1-5a+7-a^{2} ))$

   $10a^{2}-3a+1-5a^{2} +a+4-(5a^{2}-1+a^{2}-(7a^{2}-6a-6))$

    $10a^{2}-3a+1-5a^{2} +a+4-(-a^{2} +5+6a)$

     $(10a^{2}-5a^{2} +a^{2} )+(-3a+a-6a)+(1+4-5)$

     $6a^{2} -8a$

2)$(a^{2} + 2ab + 1 - [3a^{2} - 5ab - 1 - (6a^{2} + 7ab - 6)] - 2ab) - [3a^{2} - 6 + (ab - a^{2} )]$

     $a^{2} +2ab+1-(3a^{2} -5ab-1-6^{2} -7ab+6)-2ab-(3a^{2}-6+ab-a^{2})$

     $a^{2} +2ab+1-(-3a^{2} -12ab+5)-2ab-(3a^{2} -6+ab-a^{2})$

     $a^{2} +2ab+1-(-3a^{2} -12ab+5)-2ab-(2a^{2}-6+ab)$

      $(a^{2}+3a^{2}-2a^{2} )+(2ab+12ab-2ab-ab)+(1-5+6)$

       $2a^{2} +11ab+2$

4) $5a^2b + 7ab^2 - 2a^2b - 8ab^2 - [9a^2b - 6ab^2 - (a^2b - ab^2)]$

    $5a^{2} b+7ab^{2} -2a^{2} b-8ab^{2} -((9a^{2} b-a^{2} b)+(-6ab^{2} +ab^{2} ))$

    $5a^{2} b+7ab^{2} -2a^{2} b-8ab^{2} -8a^{2} b+5ab^{2}$

    $(5a^{2} b-2a^{2} b-8a^{2} b)+(7ab^{2} -8ab^{2} +5ab^{2} )$

     $-5a^{2} b+4ab^{2}$

5) $10x - 20x + [3x^{5} - 10x + 3x^{5} ] - 6x^{5} + 20x$

   $10x-20x+((3x^{5} +3x^{5} )-10x)-6x^{5} +20x$

   $10x-20x+6x^{5} -10x-6x^{5} +20x$

   $(.10x-20x-10x+20x)+(6x^{5} -6x^{5} )$

    $0$

espero q te ayude :D