IV.- Efectuar las operaciones y simplificar

165.
 
\large x-[(y-z)-(u-v)]
 
166.
 
\large (a^{2}-ab+b^{2})- \large [-(a^{2}-b^{2})-3ab]
 
167.
 
\large 3ab-(5ab-[7ab-(4ab)])
 
168.
 
\large 9x-(8y-3x)+ \large 7y-(2x-5z)- \large 4z-(-6y+3z)
 
169.
 
\large (6a-5b)-(8c+4a)+ \large (2b+9c)-(-3b+7a)
 
170.
 
\large (3x^{2}-5xy+6y^{2})- \large (4x^{2}-8xy-2y^{2})+ \large (-7x^{2}+xy-9y^{2})- \large (-7x^{2}+xy-9y^{2})-
 
172.
 
\large 12a^{2}-(a+c)+ \large [3a-c-(2a+b)]- \large [a+b-(4a-2b-c)]
 
173.
 
\large (7x^{2}-3x+4\sqrt{2})- \large (3\sqrt{2}+1)+ \large 2x^{2}-(x-1)
 
175.
 
\large (2x^{3}-3ax^{2}+4a^{2}x-a^{3})- \large (-x^{3}+2ax^{2}-2a^{2}x+3a^{3})+ \large (x^{3}+ax^{2}-6a^{2}x+2a^{3})
 
176.
 
\large P0=4x^{3}+2bx^{2}+5x^{5}-5x-d
\large P1=-3x^{4}+3cx-2d-12bx^{2}+x^{3}
\large P2=10x^{4}+5x^{3}-bx^{2}-2cx+14d
 calcular: 
P0 + P1 + P2;   P0 – P1 + P2;  P0 – P1 – P2
 
177.
 
\large P0=10a^{3}-5a^{2}b+8ab^{2}-18b^{3}
\large P1=17a^{3}+14a^{2}b-12ab^{2}-3b^{3}
\large P2=24a^{3}-6a^{2}b+19ab^{2}-16b^{3}
calcular: 
P1- P;  P + P1 – P2
 

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